Everything
* trying to centralise a decentralised protocol
* custodian wallet plugged in via API
* rigged trending and shadow banning of nostr users
* slow development though it's the best funded nostr project
* conflicts of interest by sitting in the OpenSats grants commitee for nostr grants
* no support for the "other stuff" transported by relays.
.... do I have to carry on? 

 well yeah I noticed this as well because I can't zap anyone using primal as it requires me to use their own wallet 

but I will reach out to their support to find out what's going on 

please I'll follow you now, follow me back so I'll be able to get back to you when I get a response.