Changed Gmail password but still someone has access

Question

A few weeks ago I noticed that there was a weird device from a location I've never been to authorized in my Google Account.

The thing is, I do have 2 step auth, and I definitely never authorized it.

So I promptly removed it, changed passwords. All good.

Then today I noticed that still there is someone logged in:

Is there anything else I can do to block that?

BTW, my current devices are: My PC, an iPhone, an iPad and a PS4

Answer 1

• log in to your Gmail - https://mail.google.com/mail/u/0/
• on the bottom right there is Last account activity:
• click on Details
• click on Sign out of all other Gmail web sessions button
• change your password