[2020] Can only change forum name once?

Hi there! You should be able to adjust your forum display name after a set number of days, as it originally let you know in the field after you selected "Set Forum Display Name" from your profile here. I'm not quite sure what error you're seeing specifically there, so it sounds like folks have pointed you in the right direction by letting you know to go ahead and open a support ticket so our team can investigate further and assist you!

I'm going to go ahead and close this thread out now, but please don't hesitate to reach back out if there's anything further we can help you with in the meantime!