This is probably the reason. Older element versions has video and telephony via native interfaces and coturn/turnserver for firewall hole poking.
The newer Element X uses a different infrastructure that even allows multi user conferences. You need to update your well-known server response to point it to the new infrastructure:
https://github.com/element-hq/element-call
This is probably the reason. Older element versions has video and telephony via native interfaces and coturn/turnserver for firewall hole poking.
The newer Element X uses a different infrastructure that even allows multi user conferences. You need to update your well-known server response to point it to the new infrastructure: https://github.com/element-hq/element-call