Switch server license

A new account/license was created for our team within an existing team. Given the length of the procurement process, we worked on the project in-parallel with a test account that we had also used to verify that Rise 360 works for our purpose.

The test account is on EU data center, and the full license was placed in the US data center, as our IT was unaware that these are not compatible. We need to annulate the version on the US data center, as we cannot use it and didn't use it, and instead create a license on the EU data  center.

We tried to reach support through different ways, but couldn't reach anyone by phone, didn't receive a call back, and didn't get anything beyond default email responses by email. Given the license costs, shouldn't there be some kind of support available that helps to correct some issues? How can we reach them?