Please note that we need to know confirmation on TPAM status when stop the licenses .the expiry date for the licenses will be on 31 Dec 2020 ,i would like to know all the auto change accounts password will work or not ?
Unless you have a time limited licence I don't think you will have any issues. Check what the license status is under system status and settings>status from the /admin web I/F. I would expect it to say if you have a temporary or eval or time limited license here.
I would recommend you contact One Identity support and open a case with them with the details and ask them to confirm. If you have a valid support contract then you have access to 24x7x365 email support so you should be able to get an answer today.
All the best