Hi! I just make quite a lot of modpacks in the Modrinth launcher and a lot of mods have moved there. It is also possible because the service is developed only for Minecraft. It would be much more convenient if Battle Towers was also in Modrinth, otherwise I have to download it separately for each modpack and check for its updates, but this is very inconvenient when creating modpacks.

Hi! Glad your making packs and considering the Battle Towers Mod (or were). We do have plans to, at some point, release on Modrinth as well as CurseForge.
Most likely around the time the first 1.20.1 update comes out. (soon)

Sorry I didn't answer this for over half a year, but I am returning to the modding scene in full force after a long break.