With BtcPayserver or Profile zap wallet? 

 I just tested from WOS to GetAlby payment went through. Let me know if you’re trying to pay at BTCpayserver store site. 

 I’m not sure what happened. I’ve tested paying from WOS and GetAlby and not having any issues. Also sent a refund back to GetAlby wallet with no issues. 
Noshole, your BTCPayserver invoice says it timed out. You may give it a try again to see what happens.