FB biz page doesn't show in drop down menu to broadcast live

I have been using zoom weekly for a long time with no issues.  The business page I need to appear in order to go live is no longer listed. I have three business pages two show in the drop down and the one I want isn't showing up. I've looked all over the FB page to see if something changed and I don't see anything there. Does anyone have any tips for this?  Thanks so much.