Afaik the transfer of a software license is allowed, if a physical package of the software incl. the license is transferred, ESD products (Electronic Software Distribution) are not covered by this rule. Besides of this, Trimble won’t do any changes to a legay product w/o maintenance as e.g. changing the licensee or resetting exisiting product activations.
The temporary login problems should be fixed in the meanwhile, at least according to Trimble.
One of the assets of recent version is not only new fuctionality but lots of bug fixes as well as support of new operatings systems (macOS!) too.