Hello Yoann,
We are currently trying to resolve the issue of the unexpected activation server termination.
If you are observing the problems with rehostable license activation/deactivation, please send to support@agisoft.com the first sections of the license keys that you have problems with.
In case you have global floating license server on RLM-cloud, please send the related primary/failover license files to support@agisoft.com.
As soon as we have a solution, even a temporary one, we will suggest it to everyone, who observe the activation issues.