Thank you for sharing the access details.
Here are my findings related to the points that you've shared:
1. I checked the 'Template for Photo Resources' and noticed that the option 'View with' to select the preview post is missing.
While testing on my website with the GeneratePress theme and the GP Pro plugin, I couldn't reproduce this issue. This suggests that something specific to your website is involved.
To troubleshoot this missing option, I'll recommend to test this with all non-Toolset plugins disabled and a default theme like Twenty Twenty-One.
If it's fixed, you can start adding the disabled items, one-by-one, to narrow down to a possible conflicting one.
For now, I've used some custom code to update the preview post option for this content template to the 'Deposit Photos' post that you shared and the dynamic source option for the relevant blocks in the template are now showing the fields from the field group correctly.
2. In the same content template's 'Usage' settings, I unchecked and then checked the option for the 'Photo Resources' post type and then saved the template. As a result this template is now assigned to all the posts in this post type and the message about some of the posts not having the same template is gone.
3. The repeatable field groups work differently than the regular custom fields, because they're stored with a separate hidden post type.
To show them in this content template for the 'Deposit Photos' post type, you'll need to add a view, as explained in this tutorial:
https://toolset.com/lesson-placement/lesson-placements-1621067-1624449/#displaying-repeatable-field-groups
4. The dynamic source settings for the blocks, where the Toolset fields are available out-of-the-box, you won't have to add any prefix.
For any blocks or code, where you need to specify the key to call a specific custom field, you'll need to append 'wpcf_' prefix in front of the slug added in the Toolset's field group.
( for example, for 'hero-image' field, you'll use 'wpcf-hero-image' )
I hope this helps and please let me know if you have any follow-up questions.
Note: I don't see any personally identifiable information in this thread, but, if you'd like to hide/remove any particular text or image, just let me know.