If they would want to make OP’s life difficult, they will find a way. Even through the protocol reversing angle.

Most likely there’s a clause in their EULA that prohibits reversing anything related once you start using a product. The only way around it is to show that you never accepted the EULA in the first place. That in itself is difficult, especially since the OP is being open about already using their products.

Not to be a skeptical old fart, but this won’t end well. Especially since it’s a $ software.