Homebrew Bug Possibly

So, I have been working on this homebrew Druid subclass with the 5.5e version. I think the system is thinking I am using the old 5e version of the class build structure and giving me the error that I am not following the class leveling system. Would someone be able to look it over and check?

The Circle of Summons Class for Dungeons & Dragons (D&D) Fifth Edition (5e) - D&D Beyond

Quote from Sakis >>

So, I have been working on this homebrew Druid subclass with the 5.5e version. I think the system is thinking I am using the old 5e version of the class build structure and giving me the error that I am not following the class leveling system. Would someone be able to look it over and check?

The Circle of Summons Class for Dungeons & Dragons (D&D) Fifth Edition (5e) - D&D Beyond

This is a thing that D&D Beyond keeps breaking every few months for no obvious reason. Sometimes, it's effective to include a "dummy" feature at the levels that would require subclass features in the other edition of the rules. Sometimes that doesn't work and you just have to wait for them to fix it. As far as I know, they rarely acknowledge that this is happening and have never explained why it keeps happening.

Keep in mind, though, that you only need to publish it if you want strangers to be able to use it. You and anyone in your campaigns can always use your homebrew stuff even if it isn't published. (And that link won't work for anyone else until it's published.)