Full and Starter editions

[retraite]

A question if I may (it may be that this is dealt with somewhere in your documentation, if so I apologise.). Due to an “incident”, our ISP is unable to supply internet access to 30 homes, of which ours is one. The problem started on 7/1/2021 and will apparently not be repaired until 12/1/2021. To be fair to Orange, they immediately provided an “airbox” to give us internet access via 4G. Although this solves our internet problem, it leaves my music servers on the network that does not have internet access. A side effect of this is that my Minimserver 2 installations have reverted to the starter edition, without the option to reinstall the licence, depriving me of the additional functionality of the full package.
Further investigation reveals that the minimserver installation on my Windows PC becomes “full” again when I switch to the “airbox” and re-establish internet connection.
Does this mean that it is not possible to use the full, paid for, version of Minimserver 2 without being online?
I appreciate that this question is likely to become academic again after Tuesday when our fibre connection will, one hopes, be restored, but for non-technical types like me, it would be good to know if this is how the package is supposed to work.