[IMP] in case of a user has previously been created and deactivated

easy_my_coop/models/account_invoice.py

@@ -30,6 +30,11 @@ class account_invoice(models.Model):
 
         user = user_obj.search([('login', '=', email)])
         if not user:
+            user = user_obj.search([('login', '=', email),
+                                    ('active', '=', False)])
+            if user:
+                user.sudo().write({'active': True})
+            else:
                 user_values = {'partner_id': partner.id, 'login': email}
                 user_id = user_obj.sudo()._signup_create_user(user_values)
                 user = user_obj.browse(user_id)