Emails not downloading

What is happening? Problems since updating. Everything was working fine but now issues with attachments - says cannot connect to server, now emails aren’t arriving in inbox but they are showing in my gmail account.?

The easiest solution is to remove the GMail account from eM Client, then add it again.

Go to Menu > Tools > Accounts and remove the account by clicking on the bin icon. Then add a new account and follow the automatic setup.

Before removing or changing account settings, it is always advisable to make a backup using Menu > File > Backup. Then if something goes wrong, you can just restore your previous settings using Menu > File > Restore.