Zehnder Comfoconnect won't reconnect after change of router

HI, can anyone help me reconnect my MVHR? I changed routers and the comfoconnect hub didn’t reconnect automatically. I eventually got it working, so their app now works OK, but I can’t get the HA integration to reconnect. It is reporting “Failed to set-up”. I’ve edited configuraion.yaml with what I believe to be the new IP address. However when I reload the integration it shows the old IP address, not the one in configuraion.yaml, despite restarting HA.
I tried adding a new hub with the new IP address but it says “already configured”.
Each time I try to reload it, it stays in the “initialising” state for a very long time.
I’ve enabled event logging and it says “Timeout while connecting to bridge 192.168.0.19” which is the old IP address,

In case anyone has the same problem, here’s how I fixed it.
Find file .storage/core.config_enties & copy to another location
Edit IP address of comfoconnect from old to new IP address in the file copy
in terminal run “ha core stop”
copy edited config_entries back to .storage
reboot ha (I had to do this by stopping & then restarting the VM)
Once ha restarted my Zehnder was back working as before.