I upgraded a customers 7100 appliance to 22.05 from .02 having uninstalled all the extra packages. I did have a site to site IPSec vpn to them which shows as up and happy but no traffic passes. Also my oVPN client from my Mac via Viscosity was broken. Using the oVPN app at least has given me a me-to-site connection. Netgate are ignoring my pleas in their forum!
You might want to check the release notes if some features were deprecated in the upgrade, I recall just seeing something today, though I don’t know if it’s relevant to your situation.
There does not appear to be any deprecated features or ciphers in 22.05. Check the logs for errors.
https://docs.netgate.com/pfsense/en/latest/releases/22-05.html#ipsec
I’ve been combing the logs to no avail. I reimported the oVPN profile to Viscosity and that now works (so I’ve got something). But I am totally stumped as far as the ipsec site to site