I cannot break or rename two of my waystones. At first, it won’t break, and then, it breaks, but I cannot warp to it—it tells me that it’s been moved or destroyed; however, it didn’t drop.

Minecraft version: 1.10.2
Forge version: 12.18.3.2511
Waystones version: 2.0.13

Yes, I think so.

It works now.

Sounds like you were just having TPS lag.