Hello, i am unable to select Monetization yes ,,, even if i selected it,, garmin will save it as NO,,, why?

It's not related to whether you are already approved developer or not, since this was there also before that.

Other developers also had similar problems in the recent weeks, seems like the bug still exists 

Yes, the bug is still present .... for the moment i'm blocked :( 

What do you mean blocked? Submit your app with monetization set to No. If it's not approved, then I think you get a mail, and you can reply to it and tell them to either fix the bug or at least ask them to manually set it to Yes for your app

Thank you , i will reply on the email when i will be announced that the app is rejected because is set to free, but requires payment. Thanks

This should be fixed—I just finished verifying the fix myself. I'll be rejecting any apps that were uploaded with this set to "No" due to the bug so anyone with a paid app has an opportunity to update the listing to indicate payment is required.

Thank you Brandon

I'm being asked to attach billing information when downloading a free app now?  Is that a bug?

This is a new app, and not an update to an existing one?

It's 100% free with nothing limited?

For new apps, even if you just have a link for donations, you have to say it's a payment app.  I'm not wild about this for donations, but Garmin is working on an update for this - It's the EEA stuff and lawyers are involved.