Hi,
You can work with version 2.6 too when you have licence client from 2022.
Copy the .tpl file from crack folder. Or copy licence file from common folder.
Open keygen.exe, load the copy from .tpl file
click "add" from modules, insert 2.6 in search field on top, add all options.
Safe .tpl and create new key.
I dont know exactly which file you need to run 2.6, if you have all options you have best chances it will work
If you have problems load the old .tpl and create new licence or replace licence file in common folder.
It's time to convert all the old 5.70 projects!
Good luck