fix register of multiple users

account_ebics/models/fintech_ebics_register.py

@@ -25,7 +25,7 @@ try:
         fintech.register(
             fintech_register_name,
             fintech_register_keycode,
-            fintech_register_users)
+            fintech_register_users.split(','))
 except RuntimeError as e:
     if e.message == "'register' can be called only once":
         pass