Any dev here who've used the Patreon integration to give access to their patrons, can you please guide me on some things.

1) Do download keys remain active even after the patrons are no longer pledging?

2) Can I as the dev revoke the download keys of the patrons? I saw some posts mentioning that it is not possible, is it still the case?

3) If it is possible and I revoke said keys for some patrons, do they permanently lose access? Or can they re-generate new keys? Also in case I did revoke, can they un-pledge, and then re-pledge again to get access to a new key?

4) What if I want to revoke keys for patrons, but not permanently, is that possible?

I would really appreciate some clarification on these, thank you.