I disabled the plugin, but I still cannot login to my account page

Hi, my problem is following.

After installing the plugin, my site key and secret key went through.
On “Next Steps” in option page:
2. I saw reCAPTCHA message correctly.
2-1,2,3 On different browser, my attempt to login as site admin somehow took me to my member account page and it kept demanding + rejecting my password (which was correct).
4. I clicked “delete keys and disable”.

On my wordpress setting page I see the plugin disabled now, however I still encounter the same problem (above, 2-1,2,3). I’m still being logged in as site admin but afraid to log out.
I’m using WooCommerce & Flatsome. Help!