That’s not uncommon when water gets trapped under the pavers and freezes. I had similar issues and looked into proper repair methods https://oakshs.ca/interlock-repair/ offered detailed insight into what's involved in fixing interlock damage. It turns out, if the base underneath has settled unevenly or wasn't compacted properly, it’s better to get it repaired professionally. They can lift the pavers, re-level the foundation, and put everything back neatly. I thought I could manage it on my own, but realizing how much prep work and base compaction it required, I ended up hiring a crew. It wasn’t too expensive and the driveway looks like new now. Just make sure to address drainage too, otherwise the problem may return.