To be clear, I added “POWERPRESS_FEEDS_FORCE_HTTP” so that iTunes continued to update and it also resolved the Android errors. When I switched it over to HTTPS everything worked fine with the site, it was iTunes and Android users complaining that iTunes wasn’t updating or errors.
I’ve since put my site back to HTTP and disabled the LE cert so my feed is back to HTTP. I asked the question as I’d like to get it going with HTTPS if possible but if it means people not being able to play episodes or iTunes not updating I’d rather leave it.
This leaves me with a problem now. Do I switch everything back to HTTPS and use your “…feeds_force_http” in wp-congig hoping that works or just leave the whole site as HTTP.