I tried to apply the change on your live site but it does not allow me due to firewall.
UPDATE `wd0yst4_postmeta` SET
`meta_id` = '255125',
`post_id` = '29617',
`meta_key` = '_cred_extra',
`meta_value` = 'O:8:\"stdClass\":5:{s:3:\"css\";s:0:\"\";s:2:\"js\";s:0:\"\";s:8:\"messages\";a:32:{s:23:\"cred_message_post_saved\";s:10:\"User Saved\";s:36:\"cred_message_post_not_saved_singular\";s:56:\"The user was not saved because of the following problem:\";s:34:\"cred_message_post_not_saved_plural\";s:61:\"The user was not saved because of the following %NN problems:\";s:36:\"cred_message_invalid_form_submission\";s:44:\"Invalid User Form Submission (nonce failure)\";s:30:\"cred_message_no_data_submitted\";s:75:\"Invalid User Form Submission (maybe a file has a size greater than allowed)\";s:26:\"cred_message_upload_failed\";s:13:\"Upload Failed\";s:27:\"cred_message_field_required\";s:22:\"This field is required\";s:29:\"cred_message_invalid_username\";s:75:\"The username can only contain alphanumeric characters, spaces, -, _, . or @\";s:35:\"cred_message_passwords_do_not_match\";s:22:\"Passwords do not match\";s:29:\"cred_message_enter_valid_date\";s:25:\"Please enter a valid date\";s:32:\"cred_message_values_do_not_match\";s:25:\"Field values do not match\";s:30:\"cred_message_enter_valid_email\";s:34:\"Please enter a valid email address\";s:36:\"cred_message_enter_valid_colorpicker\";s:36:\"Please use a valid hexadecimal value\";s:31:\"cred_message_enter_valid_number\";s:25:\"Please enter numeric data\";s:28:\"cred_message_enter_valid_url\";s:32:\"Please enter a valid URL address\";s:33:\"cred_message_email_already_exists\";s:42:\"Sorry, that email address is already used!\";s:36:\"cred_message_username_already_exists\";s:36:\"Sorry, that username already exists!\";s:35:\"cred_message_invalid_edit_user_role\";s:64:\"This form can not edit users with a role of %%EDITED_USER_ROLE%%\";s:32:\"cred_message_enter_valid_captcha\";s:13:\"Wrong CAPTCHA\";s:28:\"cred_message_missing_captcha\";s:15:\"Missing CAPTCHA\";s:25:\"cred_message_show_captcha\";s:12:\"Show CAPTCHA\";s:30:\"cred_message_edit_skype_button\";s:17:\"Edit Skype Button\";s:28:\"cred_message_not_valid_image\";s:15:\"Not Valid Image\";s:34:\"cred_message_file_type_not_allowed\";s:21:\"File type not allowed\";s:31:\"cred_message_image_width_larger\";s:28:\"Image width larger than %dpx\";s:32:\"cred_message_image_height_larger\";s:29:\"Image height larger than %dpx\";s:25:\"cred_message_show_popular\";s:12:\"Show Popular\";s:25:\"cred_message_hide_popular\";s:12:\"Hide Popular\";s:25:\"cred_message_add_taxonomy\";s:3:\"Add\";s:28:\"cred_message_remove_taxonomy\";s:6:\"Remove\";s:29:\"cred_message_add_new_taxonomy\";s:7:\"Add New\";s:42:\"cred_message_access_error_can_not_use_form\";s:0:\"\";}s:8:\"scaffold\";s:2686:\"{\\\"fields\\\":[{\\\"scaffold_field_id\\\":\\\"form_messages\\\",\\\"field\\\":\\\"form_messages\\\",\\\"class\\\":\\\"alert alert-warning\\\",\\\"isRepetitive\\\":false,\\\"isNested\\\":false,\\\"numColumns\\\":1,\\\"sizeColumn\\\":1,\\\"fieldtype\\\":\\\"formElement\\\"},{\\\"scaffold_field_id\\\":\\\"user_login\\\",\\\"field\\\":\\\"user_login\\\",\\\"class\\\":\\\"form-control\\\",\\\"output\\\":\\\"bootstrap\\\",\\\"label\\\":\\\"Username\\\",\\\"isNested\\\":false,\\\"numColumns\\\":1,\\\"sizeColumn\\\":1,\\\"fieldtype\\\":\\\"basic\\\"},{\\\"scaffold_field_id\\\":\\\"user_pass\\\",\\\"field\\\":\\\"user_pass\\\",\\\"class\\\":\\\"form-control\\\",\\\"output\\\":\\\"bootstrap\\\",\\\"confirm_pass\\\":\\\"yes\\\",\\\"label\\\":\\\"Password\\\",\\\"isNested\\\":false,\\\"numColumns\\\":1,\\\"sizeColumn\\\":1,\\\"fieldtype\\\":\\\"basic\\\"},{\\\"scaffold_field_id\\\":\\\"user_email\\\",\\\"field\\\":\\\"user_email\\\",\\\"class\\\":\\\"form-control\\\",\\\"output\\\":\\\"bootstrap\\\",\\\"label\\\":\\\"Email\\\",\\\"isNested\\\":false,\\\"numColumns\\\":1,\\\"sizeColumn\\\":1,\\\"fieldtype\\\":\\\"basic\\\"},{\\\"scaffold_field_id\\\":\\\"nickname\\\",\\\"field\\\":\\\"nickname\\\",\\\"class\\\":\\\"form-control\\\",\\\"output\\\":\\\"bootstrap\\\",\\\"label\\\":\\\"Nickname\\\",\\\"isNested\\\":false,\\\"numColumns\\\":1,\\\"sizeColumn\\\":1,\\\"fieldtype\\\":\\\"basic\\\"},{\\\"scaffold_field_id\\\":\\\"description\\\",\\\"field\\\":\\\"description\\\",\\\"class\\\":\\\"form-control\\\",\\\"output\\\":\\\"bootstrap\\\",\\\"value\\\":\\\"Please enter your school name and school district here\\\",\\\"label\\\":\\\"School Name and District\\\",\\\"isNested\\\":false,\\\"numColumns\\\":1,\\\"sizeColumn\\\":1,\\\"fieldtype\\\":\\\"basic\\\"},{\\\"type\\\":\\\"checkbox\\\",\\\"scaffold_field_id\\\":\\\"checkbox\\\",\\\"field\\\":\\\"I agree\\\",\\\"default\\\":\\\"I agree\\\",\\\"class\\\":\\\"I agree\\\",\\\"required\\\":\\\"no\\\",\\\"isRepetitive\\\":false,\\\"label\\\":\\\"[cred_i18n name=\\\'I agree-label\\\']By checking the box, I agree to the sites <a href=\\\\\\\"<em><u>hidden link</u></em>\\\\\\\">terms and conditions.</a>[/cred_i18n]\\\",\\\"isNested\\\":false,\\\"numColumns\\\":24,\\\"sizeColumn\\\":12,\\\"fieldtype\\\":\\\"generic\\\"},{\\\"type\\\":\\\"checkbox\\\",\\\"scaffold_field_id\\\":\\\"checkbox\\\",\\\"default\\\":\\\"\\\",\\\"required\\\":\\\"no\\\",\\\"isNested\\\":false,\\\"numColumns\\\":12,\\\"sizeColumn\\\":12,\\\"fieldtype\\\":\\\"generic\\\"},{\\\"type\\\":\\\"textfield\\\",\\\"scaffold_field_id\\\":\\\"textfield\\\",\\\"default\\\":\\\"\\\",\\\"required\\\":\\\"no\\\",\\\"isNested\\\":false,\\\"numColumns\\\":12,\\\"sizeColumn\\\":6,\\\"fieldtype\\\":\\\"generic\\\"},{\\\"type\\\":\\\"textfield\\\",\\\"scaffold_field_id\\\":\\\"textfield\\\",\\\"default\\\":\\\"\\\",\\\"required\\\":\\\"no\\\",\\\"isNested\\\":false,\\\"numColumns\\\":12,\\\"sizeColumn\\\":6,\\\"fieldtype\\\":\\\"generic\\\"},{\\\"scaffold_field_id\\\":\\\"form_submit\\\",\\\"field\\\":\\\"form_submit\\\",\\\"output\\\":\\\"bootstrap\\\",\\\"value\\\":\\\"Submit\\\",\\\"class\\\":\\\"btn btn-primary btn-lg\\\",\\\"isRepetitive\\\":false,\\\"isNested\\\":false,\\\"numColumns\\\":12,\\\"sizeColumn\\\":12,\\\"fieldtype\\\":\\\"formElement\\\"}],\\\"options\\\":[\\\"autogeneratedNickname\\\"]}\";s:\";s:13:\"editor_origin\";s:4:\"html\";}'
WHERE `meta_id` = '255125';
I hope this will help you to fix the issue.