New mainboard and then pro licence of Aomei Backupper Pro is gone

I have a problem with the new activation of my Software from Aomei. 

I just changed my mainboard of my PC and Aomei Backupper Pro is now in normal version mode and  not in the pro mode. 

When I put in my old licencecode it says code is wrong.

I bought a lifetime licence from you and I cannot use it since I changed the mainboard of my pc. 

What can I do?