Mail on Ventura 13.0 cannot search

I am using the new custom domain feature in cloud mail.

I have approx 800 emails and can search perfectly on my iPad, iPhone and online at icloud.com yet when I'm in the Mail app, i type a simple search phrase, and no results are found. It won't even find a word in the most recently received email.

I have

rebuild mailbox

resynced

deleted envelope files

checked all settings in spotlight

run rebuild scripts in terminal

rebooted endless times

using MBP M1

It seems to be a common issue and one that Apple as usual are ignoring - i see posts in the community going back over a year on this issue.

It would appear you cannot even log a support ticket for icloud - despite paying close to £30 a month for it.

Any ideas, anyone?