OK, will to that this afternoon.
Is creating a new replica reusing an old replica's name a supported thing? My replica is automatically provisioned, so it's appealing to me to rebuild it if there's any problem with it, but having to change its name is a chore (replica names should not be important, but some software does not seem to behave correctly). I'm not sure of what's the good practice here.
In any case, I will try to also create a second replica with a different name to see if the problem is caused by reusing the name.