How to update eM Client with password?

I just downloaded eM Client and tried to set it up to gmail, but was never asked for my gmail password. Therefore, when it logs on to gmail, gmail sets there (indefinitely) waiting for a password. I’ve spent the better part of two days trying everything I can think of to get it to work (including reinstalling several times) to no avail. Is there any way I can tell eM Client what my gmail password is? Anyone?