I've made some alterations to a monster to use in my campaign that I think could benefit others as well. I don't understand what is so similar since these elements have changed:

• HP and CR
• Stats (intelligence, force)
• Damage Resistances
• Features (added feature)
• Actions (changed weapon attack + added ranged attack)
• Reactions (new reaction)
• Bonus Actions (new bonus action)

I have trouble understanding why that is "too similar".

I've tried saving all elements using all the save buttons I could see, but to no avail. Is there anything else I could do?

Here is a screenshot of the original and homebrew version side by side.

Angelic Whispers, Innate Spellcasting, Magic Resistance, Healing Touch, Change Shape. Some stats up top unchanged to.

All of these abilities are present on both, completely unedited and unchanged. So I can definitely see this as being too similar for published homebrew (at least here...). Doesn't stop you using it yourself though.

Either add a new Action or rename some of the Actions. Stats, etc. don’t even get looked at when checking similarity, only Traits & Actions.