We recommend you clear your Internet history/cache. If you continue to see an error message, please try checking your Private Messages in an alternate browser. For example, if you are currently using Internet Explorer, please try viewing your Private Messages in Firefox or Chrome.
Please let us know if you need any further assistance.
I followed your advise about clearing my internet history/cache, I cleared Chrome, Internet Explorer, and Firefox. However, doing so did not change the outcome, I'm still having difficulty accessing my messages. I'm still receiving the 504 Gateway Time-out.