I have a customer who is connecting via CPE that is running NAT. They have a few machines that are connected to it with a switch. They have individual Hotspot accounts and should be logging on individually. What happens now is that when one user on the LAN side logs on with any valid hotspot account, all the computers get Internet access - i.e. the account is applied to the CPE not the individual machine.
Sorry if my terminology is a bit incorrect, I am not an expert.
a little bit elaboration on the config would help us better understand what you mean 
You can’t work around that. NAT makes the CPE appear as just one machine. All packets leaving the CPE are from the same IP and MAC address. It is impossible for a router to determine there is more than one device behind the CPE - after all that is the entire point of NAT.
put CPE on bridge mode, then each machine will face the hotspot network separately
Thanks, we will use Bridge mode. It is clear, thanks for help.