Telaa review for SteadFast

This app show host error after every few days, then stays for 4-5 days. faced this issue in the last 2 months for 3-4 times. Don't know what is the issue and why they don't fix it. ***Another new issue has arised this time after being disabled for 5-6 days, in the order page where all the order no and COD value input options are kept, it shows "sent", in all the orders it automatically says "sent". All the buttons have somehow gone gray, if I click review status it says something is wrong, if I click send, it says already sent. Please fix this issue ASAP