Does anyone know why a User Event Script or even a workflow released in the web store context does not execute when the lead is transformed into a customer (after placing a web sales order)? Basically, the entitystatus is changed from lead to customer. I just want to know if this is more a NetSuite account specific issue or a well known issue.

There was a bug where scripts were not running in the webstore context if you didn´t select "other" as well. Try putting both "other" and webstore.

I will do the test because there is a small possibility that might be the issue. The weird part is that when creating the lead, my script was executed without any problem, the issue was when trying to trigger something when the below field was changed from the web store.