Any specific APIs you are referring to?  I've not seen the API keys get wiped out.  Are you referring to a token you get using the key to then query a specific API?  If you need further help on the keys in API Console, send a message to apix-support@...

They will basically be at a L0 level.  

No.  PSUP is a partner-delivered service.  The service is purchased by a partner and support is delivered by the partner, not Cisco.  Any assets a customer owns that have PSUP coverage can be seen in CX Cloud from telemetry but not by adding that ent...