![](https://news.idlestate.org/pictrs/image/990f291f-8e19-472a-a5d4-7188ca845325.png)
![](https://lemmy.world/pictrs/image/8286e071-7449-4413-a084-1eb5242e2cf4.png)
They may block IP addresses associated with consumer ISPs. Assuming that’s the case, I would guess you’re seeing that as an HSTS/TLS error because their network is trying to trick your browser into redirecting to/displaying an error page hosted by some part of their network.
As someone who is currently hiring: Anything
Beyond that it depends on what you know and what kind of work you want to do.