Hosted FreePBX 14: Cisco SPA504G phones registered (pjsip) but cant make/receive calls

The phones are registered(pjsip) on new host, FreePBX but they don’t ring and give fast-busy when attempting to call (external or extension-to-extension).
Inbound calls ring as if the endpoint is responding and eventually go to Voice Mail as if the user ignored the call.
I point them back to FreePBX and the issue goes away.
I tried to adjust the Firewall settings and even disabled the Firewall but no joy.
Any suggestions?

Solved: Removed phones.
At Responsive Firewall Enabled SIP Protocol (pjsip) & Legacy SIP (chan_sip)
Ran Firewall Wizard again

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