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@Mona app notifications from a friendica server seem to confuse Mona on iOS. They all appear as this.

You received a new message.
Error: error: The data couldn't be read because it isn't in the correct format.

in reply to Alexandra Lanes

This seems like a server issue. The server is likely delivering incompatible notification data over Mastodon API.
in reply to Alexandra Lanes

ActivityPub is a server API not app API. Non-Mastodon servers need to support Mastodon API so they can communicate with Mastodon apps. Mona is compatible with servers that support Mastodon API. In this case, the Friendica server supports Mastodon API, but it appears that they got something wrong.
in reply to Mona app

Say if the Mastodon API requires that server provide a notification title and identifier to the app when delivering a notification, but Friendica provides nothing, then the app can’t display notification.
in reply to Alexandra Lanes

ActivityPub is a server-to-server protocol. No clients involved.