Outlook not showing the AIP Protect button for classic labels

[Sesu-]

Hi,

I set up AIP labels some time last year but the Protect button suddenly disappeared last month from all windows desktop apps. We can't add the classified labels anymore, and the AIP addon is not there in Outlook, not even disabled. P.S The sensitivity icon is visible but we prefer the Protect which also had advanced settings to warn users of external emails they are sending.

Version is 2004 (12730.20270).

Anyone know how to get the Protect button again on Outlook?

Thanks

[#2]

The protect button is linked to the old Azure Information Protection portal which is being retired.
The Sensitivity icon is the new path forward.
You should migrate your labels and policies by activating "Unified Labeling" by following the instructions here:
https://docs.microsoft.com/en-us/azure/information-protection/configure-policy-migrate-labels