All Inbox - Gone

I have been using eM Client for two months, everything was perfect. Suddenly, all my inbox mails are gone. However, on the mobile phone app, they are still there. What to do ? Also, in sent folder everything is preserved 

Hi, what version of eM Client are you currently using on your computer, can you please check for the exact version in Help > About? What mail service are you using with eM Client?
Are you seeing any errors from the application?

Thank you,
Paul.

I recently lost all emails in an important folder; I have version 6.0.21040.0.

Hi Dean, are you using an IMAP account with eM Client, was there any error displayed? Does this issue persist or was this a single occurrence issue?
What mail service are you using with eM client?

Thank you,
Paul.