Question for those still having this problem:
Do you have the boards bookmarked and are you accessing them that way?
Here is how I am getting stuck in the login loop:
If I go to the CGC site, log in and click Chat Boards on the menu, the chat boards open in a new tab and I am signed in. If I click 'sign out' in that new tab, I can see that I am signed out of the boards. If I go back to the original tab where I signed in on the CGC main site, it looks like I am still logged in but I'm really not. So, when I click Chat Boards on the menu, they open in a new tab but I am not signed in. I click to sign in, I'm taken to the CGC main page where it looks like I am already logged in. This is how I am getting stuck in the loop.
For now, I'm asking our programmers to have the boards open in the same window rather than in a new tab. That seems to resolve the problem for me but I don't know if it is a problem for all of you if the boards open in the same window rather than a new tab. If it is a problem, we can easily roll it back to opening in a new tab but I thought this approach may relieve some of the frustration in the short term.
How are you getting stuck in the loop?:
I'm not sure we are all getting stuck in the loop the same way which is why I asked the question about accessing the boards through a bookmark. If you are getting stuck in the loop after taking steps that are different than mine, would you please let us know how you are clicking to get there?
We appreciate your patience and all of the information provided so far. We look forward to getting this resolved for everyone.