It is possible that the podcasts that you listen to have switched from
http to https while the radios were packed away.
A newer LMS might solve this for you if that is the problem.
You could install it on a PC (temporarily) to see if it fixes things -
or jump straight in and update your ReadyNAS
I have two SB Radios - faithful beasts and I applaud the community here
for their dedication.
I use a Readynas RN312 with these two radios and until now this has
served my needs by:
a) Playing spotify
b) Playing radio
c) Playing podcasts
CUrrent version of the LMS on the Readynas is:* 7.9.0 - T