Rollable Blocks in Homebrew Monster

I have been mulling over this stat block and it simply does not work when I plug it in to the VTT or Encounter Builder. It is still showing the rollable notation in the VTT but on the view monster page it shows a normal dice number (8d8) like the notation isn't there, albeit without the rollable buttons. I've even gone as far as to undo my work and let DnDBeyond's "add rollable blocks automatically" do it for me on a new homebrew monster sheet and it continues to not work. Someone please help me! Images below if anyone can see what I am doing wrong besides making a strong monster.

https://imgur.com/a/XZa0mg

>> Adding [rollable] tags to your homebrew monsters for use in the Combat Tracker & Encounter Builder

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