some errors in opencart website -- 2

site hosted amazon aws servers in opencart version 3.0 website face some issue...............we tryed paytm gateway upload by admin but it not showing another issue is from few days when customer placing order they getting order confirmation mail spam or trush but it should inbox, another work is we provide opencart advance payment plugin just install it and configr properly. also we have integrate smsalert plugin but after recharge last time sms fully stopeed. you should fix it. for this work pay you 1000