Android Gmail App not find email addresses / contacts that emailed before?

Sometimes after installing the application on mobile devices,  due to permission popup and without reading the message users generally select Allow / deny.  This will cause that we are not able to select the email / or contacts while sending the email from the email app.  To resolve check the following things:

Went to Android Settings, Apps, Gmail. In the App Permissions section, Contacts disabled. Enabled it, closed everything.

And after  opened gmail, it was giving me suggestions of emails as I was typing.