And get an email that says "Your sign in attempt seems a little different than usual..." Is it normal?
Ok, I can't really assure this has happened everytime but I don't remember a time when I was logged in straight in with my username and password.
Are you using connecting via VPN/Tor/proxy, when logging into your account?
Or are you using incognito every time you login?
I've never seen this, but I'm using the two-factor-authentication (2FA).
EDIT: Or are you connecting via mobile network, which might be throwing around it's IP-addresses, which triggers DigitalOcean's security system.
No just regular browser. I checked my email I have 10+ requests in about 2 weeks from using the service.
Okay, then you should create a ticket with Support via the control panel.
They're the only ones who can see what's going on behind the scene.
You might not find it a problem, but it is, since false-positives makes humans ignore warnings - and then you might not notice if some bad person actually gains access to your account.
But no matter what, I would always recommend activating 2FA:
https://cloud.digitalocean.com/settings/security
I'm also having this situation, I thought this is normal since I'm new here. When I close my browser it will automatically logged out from DO, have to login again each time, and sometimes I have to use verification code, maybe twice a day it asking verification code.