AJA SDI-IN audio not working on 5.3?

Hi guys, i´m working on a project using 5.3 where we need to have live video input with audio. We are using an AJA KONA 5 card with 4K input and the lastest 4K firmware. However, according to my tests, starting from Unreal 5.3, the audio stopped working on input. I ported part of the code to 5.2 and it worked with sound, but the current project was done entirely in Unreal 5.3 can someone help me with this? I believe it could be an AJA plugin bug in 5.3. Thanks!