glitch where non-operators can't open crates, break blocks, and do anything in spawn blocks and beyond

Hi everyone,

My server had a glitch where non-operators can't open crates, break blocks, and do anything in spawn blocks (and beyond). They could first and then suddenly they couldn't. I moved the spawn blocks with / setworldspawn and since then the non-op members have not been able to build beyond 50 spawn protection blocks. How can I solve this problem?

Thanks

spawn protection is 50, but even beyond 50 blocks no one can build and / or interact with objects

I use essentialsX, worldedit, skinset and varlight