I now have my app's source code mirrored at @codeberg. Besides that, it is available at @fdroidorg and primarily hosted at #notabug. I also have another GitLab mirror. With that, I believe I have multiple locations it can be obtained from that won't simply take it down due to claimed trademark infringements that really have no legal basis¹.
(Contrary to Google Play.)
¹As far as my interpretation of the phrase "geschäftlicher Verkehr" (MarkenG § 14 Abs. 2) goes.
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.