Hint for HELP

I have tried all the possible steps:
submit ticket :-
step 1 file supported
1: change time zone to L0
2: upload s
e
* with extention (no luck)/ call it back after changing the ‘x’ range

step 2 er: file not supported (no luck)
yes I have changed php -reverse -shell already using (/usr/share/webshell/php/reverse*)

in exploit not sure what code should I use ?
currentTime= (???)
Thanks