Emails from inbox have disappeared

Emails from inbox have disappeared

My emails from the inbox disappeared out of no where. There were about 1L emails that have just disappeared out of nowhere. 

The emails were present at 23:01 IST and I was checking them and moved some of the emails in trash(check screenshot 1 for proof). Attached two screenshots as proof(screenshot 2 and 3) that emails weren't deleted from 'Trash' since 16:00 IST

Requesting you to look into this as soon as possible, if I need me to pay for a higher support I'll be more than willing to. I cannot afford to lose this data. Would request you to look into this as soon as possible. 

Regards,
Niranjan