That looks like my cat so much!

Humidity. Wet filament is notorious for failed prints. There are ways and devices to dry filament again, but it’s just better to keep it dry from the beginning!

Whatever works for you. I’m fine with building myself, but an apk release would be more accessible.

You could even link it with the STL so people could find it as a complete package!

That’s awesome! Any chance you would release the docking app?