Still not working...
Changing hosts is not an option for everyone, I don't want to do that for example, as I am otherwise happy with mine and the service they provide. Thus it doesn't really fix the problem.
I'm having the same issue trying to submit podcasts,
I'm using feedburner RSS links and have tried multiple browsers with no success,
I'm also trying to submit multiple podcasts and none of them work with the same error message
I am using Anchor but I am unable to claim my podcast anyway, no matter what browser (safari and chrome). I sent an email and waiting for a response 😞