I had the sames issue within a month of installation of some LVP I got. I don't remember what the brand is, but it was a very thin click-lock from Home depot. It was one step up in price from the really thin glue type; but I think the glued seam would have been better. The sub floor I installed it on wasn't perfect, but only have very minor imperfections. I've installed laminate click-lock many times with no issues.
I ended up using a vinyl glue and banged it back together, but couldn't get it all perfect (there were separated seems all over the place. When my tenant moves out, I'm just going to eat the cost and put in the flooring I've put in my last few rentals that went in very well, look great, and, so far, no issues; the Pergo Wet Protect from Lowes.
Also, FYI, on most holidays Lowes does an .89 square foot install cost. Even if I'm not ready for new flooring yet, if I know I'll need flooring soon, I'll lock in the price on a holiday and schedule getting the measures a month+ out when I'm ready. We did this on the last house a month before we even closed.