I wanted to subscribe both drawing and publishing on my SP3 but the app says I can't buy it through the app anymore. There is some kind of error code then [CV:xp5zPR4pn0KKWEp0.7.2].
Thanks for the help.
I moved your comment into the forum as a new post, since this is the best place for questions and troubleshooting.
I'm also reporting the error to the Catchbook team, and we'll follow up with an answer.