Local installation logging many users, VPS installation failing to login many users

My company purchased the 1-year 25-user subscription plan for ERPnext.

On a LAN PC with Ubuntu 16 LTS I installed ERPnext V8 from github with easy install script and added 5 users. I did the same to a VPS and added the same users. All users can be logged in simultaneously on LAN PC but on VPS only Administrator and the first-added user can be logged in.

@D_Petropoulos thanks for subscribing to ERPNext, the 25 user subscription is for the cloud instance of ERPNext (htts://erpnext.com) on your local machine its free for unlimited use!

Have you set IP based restrictions for other users?

That was it! Thanks. I had forgotten I had placed partial IP filter on all other users.