Hi all,
I had the same problem and noticed that you did too. Not sure if this helps ( as I’m not an expert) but after doing some research I found that the issue was to do with my security configuration.
I use iTheme security for all my websites and had found that it was simply a setting that that needed to be unticked. Under the system settings (iThemes settings), go to “Filter Long URL Strings” and UNTICK the box. When ticked, it limits the number of characters that cane be sent in the URL.
This option worked for me therefore maybe it might work for you. It also maybe another option on another security plugin.
Additionally, I also had a message that stated, “There was an error getting your inbox. Please try again.” as well as, “There was an error getting your stats. Please try again.” This could probably cause some confusion, as it did for me but I assume that the issue covered both due to the long URL string.
Hope the above helps and if not, hope you solve the problem!
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This reply was modified 4 years ago by ac607.