Migrating to a new laptop, but I can't re-install

I have blocs 4 plus and blocs 4 key.
I tried from Blocs 4 before upgrading to plus, but I get this error.
Specifies that we were unable to complete the activation of the product.
Can Blocs team help?
error

you deactivated “blocsapp” on your previous computer, possibly that’s it, it happened to me once, but deactivating I was able to reinstall blocsapp

Follow this guide. You will need to use your Blocs 4 license number first, then enter the plus one after.