Hello. Thank you for contacting the Toolset support.
Well - I would like to know, is the date field is created using Types plugin? If yes - it should work.
if you can share problem URL and access details - I can better explain you the reason.
*** Please make a FULL BACKUP of your database and website.***
I would also eventually need to request temporary access (WP-Admin and FTP) to your site. Preferably to a test site where the problem has been replicated if possible in order to be of better help and check if some configurations might need to be changed.
I would additionally need your permission to de- and re-activate Plugins and the Theme, and to change configurations on the site. This is also a reason the backup is really important. If you agree to this, please use the form fields I have enabled below to provide temporary access details (wp-admin and FTP).
I have set the next reply to private which means only you and I have access to it.
Ok - i see now why its displaying "20 48 49 146" - I see you are using view to display the age.
=> hidden link
Now, its loop through all the posts of post type "Gastouders" as view is set to display the content from that post type. Are you wish to display the age from the current post you are displaying?