The latter.
Are you just using the browser extension, or do you have it connected to nostr:npub1xnf02f60r9v0e5kty33a404dm79zr7z2eepyrk5gsq3m7pwvsz2sazlpr5?
Discussion
If you think you are missing payments, they have a Telegram and email support system. I’ve always had any failed payments returned after a short time.