Can't subscribe to new podcasts

App version: x.y.z (state whether from Google Play/F-Droid/Custom built APK)
3.5

Android version: 5.x (Please mention if you are using a custom rom!)
13

Device model:

moto g play
Expected behaviour:
I have been using for about a year and have about a dozen subscriptions active.

Current behaviour:

I can not long find a way to subscribe to new podcasts. Something changed.
First occurred: (e.g. about x days/weeks ago)

First noticed about a week ago when I tried to subscribe to a podcast and found no option.
Steps to reproduce:

  1. This
  2. Then that
  3. Then this
  4. Etc.

Environment: (Settings you have changed (e.g. Auto Download). “Unusual” devices you use (e.g. Bluetooth headphones). Did you select another media player?)

I guess you disabled the “add podcast” page in the side bar. Long-press an entry there to enable the page again.