Hi @FRSJ!
@lazar has already answered some of your questions but I wanted to add a few more notes.
If you’re looking to create short, opaque DOI suffixes in line with our best practices documentation and you are hosting your journal on and registering your DOIs/metadata via OJS, we strongly recommend that you use OJS’s DOI assignment capabilities. In OJS version 3.4 and later, you have the option to select a suffix pattern for your DOIs (see step 8 here). Of those options, selecting ‘Default’ will result in DOIs with fully opaque random eight-character suffixes, like 10.#####/CSPQ0792. (This may also be possible in OJS 3.3 and earlier versions; unfortunately as OJS isn’t a Crossref product, I don’t know everything about it, but if any OJS 3.3 users can confirm whether this is an option in this version, that would be helpful!)
You mentioned that you are also having difficulty with your automated deposits. Are you receiving any error messages? A 401 error is one of the most common errors OJS users face; it comes from depositor credentials that are not correctly configured. My colleague @eatoni has written some guidance about resolving this error here.
If you are encountering a different error or problem with your deposits, could you tell us a little bit more about the specifics? We’ll be happy to help troubleshoot.
Thanks!