Q: Anyone else having trouble connecting to iTunes or AppStore?

Yes, I just posted similar problem. Been trying to figure it out for the past hour and a half. Not liking the waste of time.

I've been trying for a week. There must be an issue. Typical apple no information, can't call anyone. Android looking better everyday

I've had problems since Thur. Are you all getting ''The iTunes Store is temporarily unavailable. Please try again later.'?

If you're trying to access iTunes via Windows10, here's my solution:

iTunes background process and server host connections - Apple Support

My problem was definitely between my Firewall and iTunes. Once I gave Apple's servers and apps permission to run, I was able to see my account info in iTunes.

hooray!