Unearthed Arcana Impression of the U/A Psi Knight in play

[prabe]

Apologies, misremembered. Should have double-checked like I did for the general rule. You can only take Resilience once, the only feat I can find that you can take more than once is Elemental Adept.

Don't worry about it--it's an easy mistake to make, between being a reasonable houserule and (apparently) D&D Beyond not handling it correctly.