No, all 4 use the same key. I don’t do separate keys for the multi-computer accounts because this has caused too much headache in the past. For example, If EZGS is activated with 1 key and the SPA is activated with a different key on the same computer then 1 computer uses up 2 keys. It is a nightmare that way because people can never keep track of which key belongs to which computer. So all computers in a single account use the same key.
I don’t know why it wasn’t working. If the activation kicks out again then it may be some type of OS folder saving permission issue. If it continues to happen then let me know and I’ll do a remote desktop session with you to look at it.