Probably multiple things are going on here:
- Invite codes are pretty non-standard, probably the only relay that supports them is frith, which I don't think relay.tools uses. If you're manually adding pubkeys to a white list, that means invite codes aren't adding the pubkey automatically. Try adding anchor's public key to your whitelist (27b7c2ed89ef78322114225ea3ebf5f72c7767c2528d4d0c1854d039c00085df).
- Is the service worker error only in incognito? Or are you using firefox? More details on that would be helpful.
- Anchor won't send push notifications for events signed by you, so you'd have to test from another account.