Does this happen with all eyepiece pairs? If you only have the pair that came with the binos I might do the swap eyepieces / rotate eyepieces to see if it is an eyepiece knocked out of whack, not the binos.
Remember the role of eyepiece optical axis errors, https://www.cloudyni...f-apm-100-bino/ .
I also found the removing and reinserting eyepiece can resolve temporary issues, probably related to eyepiece holder clearances.
Check the eyepiece holders too, the orings can break, and a partial print can decent er an eyepiece. I used my fist pair without the orings, without issue.
APM has a tool available for home collimation. It is pictured on their site and in CN discussions.
I have collimated 3 pairs of old 1950s-1960s binos with a large lens spanner as well as plastic spudgers and modified wooden tools (to avoid collimation eccentric ring damage and slipped tool damage). It is tricky, and may take reorienting both sides to reach collimation where the barrels have been turned, on those old zinc screw on barrel types, not applicable here. The hardest part on fixed eyepieces is getting target (I did this in daylight) truly centered. I think I used a method where I moved my eye well away from the eyepiece to reduce the visible portion to a small area. It may also be possible todefocus an articicial or real star to allow matching the defused circle to the field edge.
I never touch prisms, hoodoo is required.
Also, contact Suddarth, the bino experts. They are great and said to be affordable.
Yours sounds like it will need the true collimation with a tool though; it cannot hurt to swap and also rotate the eyepieces first.