Sound gets cancelled when I’m teaching dance

Help! I teach flamenco dance on zoom. It was all working fine until 3 weeks ago. Now when I clap or stamp the sounds cuts out!!

at first just on my laptop but now on my mobile too. Laptop is Microsoft mobile is apple so figure it’s definitely an issue with zoom itself. 
I hadn’t changed the settings for sound on my meetings. I’ve looked at the settings and can’t see anything extra to do. 
contemplating switching to another platform unless can sort this by Friday. Thanks for any ideas…@dance @echo @sound