It was announced many times by IBM, but is someone is still using old URL, please note that you have to change it!
There is no update of vBET needed, just go to [notrandlate]Admin CP > vBET > Translation Providers[/notranslate] and update 2 attributes for IBM Watson (key and URL).
You will get new values in your IBM account - just login there, go to your translation service, then to service credentials, generate new ones, and copy values from Manage section to vBET configuration.
Old configuration will stop working at May 26, 2021.