I don't want to be banned by others shenanigans ( people using the same vpn company).
This will not happen.
I know you've already received a handful of replies, but I just wanted to pile on.
Our staff here are well-versed in the dark-arts of VPNs, and dynamic IPs.
How likely is that if I am straight (not doing anything wrong)? Recourse and will anyone be prepared to vouch for me (member since 2016) just in case? Its a great board. Or am I over worrying?
You are definitely overly-concerned, but this isn't necessarily your own fault. It's easy to think that you might accidentally fall onto the wrong side of things.
The only thing that can really vouch for you, though, if any accusations are thrown your way would be your actions and your staked address.
Sometimes accounts are charged a small "evil" fee, in
BTC, if they are created on an IP that has been used for nonsense in the past. In a way, this sucks for users when they end up paying for the sins of others, but if I remember right the staff will lift these manually if you request them to.