Whmcs keep closing clients account

[NormanRynd]

i have a weird problem that happen every day to my clients and i can't fix it , i tried to Reinstall WHMCS and still same issue!

 

After client place order and paid , after few days / weeks client contact me telling me " This account is no longer active " 

After checking logs everything else i found there no Invoices need to paid or over due everything seems okay but i still don't understand why.

 

i have attached some images of a client account have the problem

Client chat : 

from here i need to change client status

 

Invoices : 

Logs ( there nothing show that account set to closed ) 

 

System Automation Settings : 

 

 

 

i read all WHMCS docs about client status, but still can't figure out how to fix this, i just don't want system to mark accounts as closed for any reason.

 

any help please?

[DennisHermannsen]

What modules are installed on your WHMCS installation? Try disabling all modules and hooks to see if that solves your problem.

[yggdrasil]

I don't think disabling customer accounts is something WHMCS does. This seems like something custom you added to your installation.