SB have been very clear on this.
when the elicenser server shuts down then the dongle is ‘set in stone’ there is NO support - if it breaks or disappears then ‘tough’ - zero support.
it’s worse than that though - at this point it’s possible/probable that the licences left on the dongle won’t actually be eligible for any upgrades. As far as SB is concerned ‘they don’t exist’ - they are set adrift…
They continue to work as long as the hardware keeps working but if/when that breaks…adios.