Error Exceeded Maximun Allowed Authtokens - MS Outlook

Error Exceeded Maximun Allowed Authtokens - MS Outlook

Hi,

I had the known issue of exceeded maximum authtokens.
I proceeded as explained (go to Zoho Account, delete authtokens so I have only one or two left).
Now, when I enter mail and password in MS Zoho connection window, nothing happens. I mean, fields get empty, and I have no feedback.
And I can no longer use Outlook, because Zoho is enable to connect...

What should I do ?
If I unsinstall / reinstall the plugin, will I lost all my synchronization history ?

Rgds
Jean