My skill has been in the store for about 2-years now https://www.amazon.com/app316-com-Your-Morning-Coffee-Music/dp/B07DPRHJ79. It has approximately 200 unique users per month. I recently added a premium version of the skill (I have a full paid license for the music). Amazon rejected the in-skill version of the skill "The content included in your skill is currently unsupported by the service." After contacting support, they gave me the same boilerplate answer--virtually no explanation for why I am unable to monetize this skill.
This lack of transparency is VERY CONCERNING. You could spend a lot of money developing a skill only for Amazon to reject it without giving a valid reason. I have another skill that was recently rejected with a similar copy-and-paste "reason."
There are several skills in the store that offer in-app purchases for premium music content (i.e. all of the sleep sound skills). Is Amazon closing off this opportunity to new skills?
I've never made a dime from Alexa Skills, so I was excited to learn of the possibility through ISPs to finally monetize a skill that has proven to be useful to a lot of people.
Even Apple will jump on the phone with you to explain why they are rejecting an app. I asked Amazon several times to call me so I could understand why they were not allowing me to monetize my skill--each time they copy and paste the same response.
I am not demanding for my skill to be allowed to use ISPs, but how can we as devs build anything of significance when Amazon refuses to be transparent about their guidelines?