You should be able to click activate services, and then login to World of Tanks on your laptop, and it should register that for XVM, and work fine from then on...
Otherwise I am not sure what could block part of XVM... it seems weird.
Just in case, please attach log files as described in the link in my signature
When you switch between computers, do you keep reactivating on the modxvm website? Since I'm pretty sure it's locked to the computer that last logs into World of Tanks afterwards.
Check your antivir or something like this, a lot of batch scripts failed durring the installation. Something on your PC blocked them, hence your issues.
Did you select proper option for mirroring in the modpack?
Hard to tell without logs, as always required when posting a bug report.
If it's a Ranked Battle-thingie, it's not fixed in XVM.