Chat window reconfigured so names are not visible or clickable; also error 10004 when updating

I teach via Zoom, still, and today the appearance of chat was changed so that -- whether it was in popout mode or not -- the names of chat participants had slid to the left and could not be accessed, if someone directly messaged me.  I cannot teach effectively if I cannot chat to "Everyone", or see to whom I am directing a message.  When I told students I wanted to restart the Zoom, to see if that would help, upon restarting the meeting, it tried to update.  Not surprising.  Normally our district updates Zoom, but sometimes Zoom will update itself.  But the update stalled and gave me an error message (10004).  Does anyone know what I can do about this?  I put a help request into Zoom, but essentially they just gave me a set of links, including the one to this community.