Thanks I'll check it out.
Here is what I've found out since I jumped on this last night.
1. I've only had users with VPNs say they have had issues. No one thus far isn't on a VPN, granted very small number of reports, but 100% are on VPN. All have said if they reset VPN/IP they can get on for a limited time before it happens again.
2. Those same users in #1 can reach a static html page on same server/same domain name as board. Thus leading me to believe it's a forum software issue, not DNS or server. Can't access
https://theplatinumboard.com/index.php, but can access
https://theplatinumboard.com/test.html
3. Server loads, even at peak times are less than <2%.
4. No errors or anything out of the ordinary in server logs that I've viewed. No banned IPs on server.