Licensing Buisiness messenger

Hello,,

I have bought SDL Trados Manager Lite in Mai 2020 and in the meantime I have update to SDL Trados 2021. The software is licensed, also the Manager. I receive the following message: 

In the demo mode only 15 invoices can be established. What can I do? Can someone help me today? It is urgent. Thanks.

Kind regards

h.kallenborn