Strange Panelist Issue

Hi all

I was hosting a webinar for our school on Tuesday night, and invited our panelists, as well as setting name tags and backgrounds for them. When the practice session started, all panelists were there, but not everyone had a background or tag, even though they were set up. Right clicking on the options for each panelist came up with different options for those without a background. With a background I had the 'Change Panelist Appearance' option, but the others, even though they were registered as panelists, didn't have that.

Has anyone else experienced this and any advice on how to fix it? I thought it could have been something with which email address was used, but each person logged on with the email address that had been set up as a panelist beforehand.

Many thanks for any advice.