Attempt to load add-ons.
List of add-ons displays.
Error failed to query add-ons displays, no add-ons listed.
Same problem as https://github.com/mozilla-mobile/fenix/issues/12399; only appears to happen if custom add-on list is added in settings. When custom list is removed, it appears to work again as expected.
I cannot reproduce with default settings. What do you mean by "custom add-on list is added in settings"?
I have the same issue.
What do you mean by "custom add-on list is added in settings"?
Starting from the latest Nightly, when you activate the debug menu ("Secret Settings") by repetitively tapping the Firefox logo in Settings --> About Firefox Nightly, you have the option to add your own custom Add-on collection.


Maybe I have to wait for the next update, in my version from the Google Play Store it's not yet included. Thanks.
You can download it from taskcluster if you don't want to wait.

Same problem after active custom add-ons list
Android 7.0 Oukitel c5
@quadriflax what values for userID and collection name are you inputting int the dialog? Could you try by using 16314372 myCollection respectively?
@quadriflax what values for
userIDandcollection nameare you inputting int the dialog? Could you try by using 16314372 myCollection respectively?
Tried the above, same results.
Just tried them, same issue.
Sorry my bad, the right values are 16314372 test. This message show up when the values are not correct.
By the way, if you save with both values empty it should reset to the default values.
Sorry my bad, the right values are
16314372test. This message show up when the values are not correct.
It works (I see LASER CAT)
Then I think we can close this issue, feel free to reopen it needed :)

Yay! Works here, too. I was able to load my list. I entered my user name, not the ID number on the account. But I was able to load new addons. Thanks!
@Amejia481 How did you get your User ID and collection name? If I go to my "Android" collection on AMO, I get this link: https://addons.mozilla.org/en-US/firefox/collections/13213756/android/, so I supposed my ID was 13213756 and the name "android" (but I also tried "Android"), but it did not work.
That should be your ID (it shows on the left of your screen, too, under "Firefox user"). Not sure why it won't work for you, but when I click your link it's not loading and says I can't perform that action at the top, so maybe something is wonky with your list/account. Try making a new list and see if that works.
I tried setting up a new "test" collection and it works... strange, but thanks!
Edit: I believe the issue is that in these old collections there are add-ons the were only available for the Android platform and that now you can't add any more in new collections.
In my testing I found that the ID and collection name must match their respective values in the Collection URL, not the display name.
https://addons.mozilla.org/en-US/firefox/collections/<USER ID>/<COLLECTION NAME>/
So, for example, given a collection named "Abc Def", you must enter "Abc-Def" (note the dash) as the "Collection name" in the "Add-ons" screen.
IMHO this is sufficiently non-obvious that this issue (or another) should be opened to improve the user experience.
Mozilla ought to add that to the blog post! https://blog.mozilla.org/addons/2020/09/29/expanded-extension-support-in-firefox-for-android-nightly/
Most helpful comment
In my testing I found that the ID and collection name must match their respective values in the Collection URL, not the display name.
https://addons.mozilla.org/en-US/firefox/collections/<USER ID>/<COLLECTION NAME>/So, for example, given a collection named "Abc Def", you must enter "Abc-Def" (note the dash) as the "Collection name" in the "Add-ons" screen.
IMHO this is sufficiently non-obvious that this issue (or another) should be opened to improve the user experience.