The 2 post types that I created are:
They don't show up in the dropdown selector on the post forms page. When I try to edit the post form "Anmeldung", I can't save the settings, as the relation to the post type "Anmeldung" gets lost.
Interesting observation: I can create new custom post types that show up correctly (e.g. the "TestbeitragstypenTD" that I created today). So the problem is related specifically to my 2 post types that I had created a few weeks ago. I had edited the form several times over the past weeks without any problems.
Unfortunately there ist ongoing activity and data input on the production website, so I need a solution to repair the problem without redefining all the data structure.
Q1) The 2 post types don't show up in the dropdown selector on the post forms page.
Since you setup those two post types as not "publicly_queryable", so CRED will not be able to edit/create those post, for example you can try this:
Edit the post type "Anmeldungen", in section "Options", enable the option "publicly_queryable", and test again.
(boolean) (optional) Whether queries can be performed on the front end as part of parse_request().
Q2) form "Anmeldung", I can't save the settings, as the relation to the post type "Anmeldung" gets lost.
Same as above, you will need to enable the option "publicly_queryable" for post type "Anmeldungen", and test again.
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