Ok, in Chrome, I cleared the browsing data for the last 4 weeks. In extensions, I deleted anything that didn't look familiar.
That seems to do the job.
Thanks for all the prompt replies and for all the tips!

I have to post a similar question today - no ads, but I'm getting a click sound since yesterday, when I'm not clicking, like someone else is using my computer! Except I thought remote use wouldn't bring up the clicks?

I'm not getting them (except announcing the webinar). Do you have virus software loaded on your computer?

You can get the pop up blocker,s through google play.

I use avast

https://www.malwarebytes.org/
this is free

I'm almost sure that your computer has been infected with spyware/adware, that's the same sh*t. It happened to me once when I was surfing on Wikipedia and Wikipedia does NOT allow ads on its platform so I knew I had been infected. You should try some kind of anti adware program (https://toolslib.net/downloads/viewdownload/1-adwcleaner/ ). For preventing further trouble, download AdBlock. That should be fine normally...

I forgot to post the image... here it is now... the ads seems only available when I'm browsing in Chrome. It sounds like it is just my browser as I do not get these pop ups using Safari (i'm using an iMac).
How do I remove these annoying pop ups in Chrome?!?

I'm the same as Nicole. Just get the pop-up for the new webinar for the week. Not sure what's going on with yours. Have you filed a support ticket yet? They may be able to help you. Good Luck!

Works fine on my end. The only popup I get is when a new Webinar is scheduled. They air every Friday and a good 2-3 days before you'll get a popup regarding the upcoming Live Training Webinar.

If that's what you mean, it's perfectly normal. I don't encounter any other popups here at WA.