How do I set proficiency bonus in DnD 2024 homebrew?

Hello, the proficiency bonus for my homebrew monster is incorrect; it reads as PB +3 rather than +4.

I have created the monster as a level 11 fighter and set its CR to the correct level, which is calculated based on its HP, AC, damage output, etc. However, the proficiency bonus for a level 11 fighter is +4; the bonus in DnD Beyond says +3.

Because I want the monster to correctly adhere to the DnD 2024 rules, I need to set the proficiency bonus manually. How do I do this?

How do I report this error?

A level 11 creature's proficiency bonus is always +4 regardless of it CR. You're saying that DnD Beyond's technology limitations, which tie a creature's proficiency bonus to its CR despite the bonus contradicting the creature's level, is not an error?

I've been GMing for decades and homebrewing 5e since 2016, and I have not misunderstood anything.

The quantity of a creature's hit die, PC or otherwise, is determined by its level. We know that a Hobgoblin Warrior is level 2 because is has 2 hit die (2d8) and the total bonus HP it receives from its Con modifier is +2 (bonus HP per level is 1 because its Con modifier is +1).

Every monster adheres to these rules:

• An adult red dragon is level 19; it has 19 hit die, which are d12s because its size is Huge. Additionally it has 133 bonus HP on account of its +7 con mod (19 * 7 = 133). To make an attack it adds its +6 proficiency bonus to its +8 str mod for a total +14 to hit.
• An animated flying sword is level 4; it has 4 hit die, which are d6s because its size is Small. It has 0 bonus HP because its con mod is +0. To make an attack, it adds its +2 proficiency bonus to its +2 dex mod for a total +4 to hit.
• An ape is level 3; it has 3 hit die, which are d8s because its size is Medium. Additionally, it has 6 bonus HP on account of its +2 con mod (3 * 2 = 6). To make an attack it adds its +2 proficiency bonus to its +3 str mod for a total +5 to hit.
• A dracolich is level 18; it has 18 hit die, which are d12s because its size is Huge. Additionally it has 108 bonus HP on account of its +6 con mod (18 * 6 = 108). To make an attack it adds its +6 proficiency bonus to its +7 str mod for a total +13 to hit.
• A giant axe beak is level 8; it has 8 hit die, which are d12s because its size is Huge. Additionally it has 32 bonus HP on account of its +4 con mod (8 * 4 = 32). To make an attack it adds is +3 proficiency bonus to its +5 str mod for a total +8 to hit.

Calculations within monster stat blocks aren't arbitrary, they are calculated based on strict rules that include the creature's level.

I literally just gave you all the math you need to figure out that monsters do, in fact, have levels. Have fun with your made up game rules.