When players try to right click the sign portals to access the worlds, nothing happens. No error message, nothing. In the mean time I have made warps for them to access the other maps which they have no problem using. I would like to get rid of those warps and only allow people to access the worlds through the sign portal. I know the sign works fine because OPs can use the signs and my players do have permission because when they warp to it they have no issues. Does anyone know how to fix this?

Same exact issue, it seems like there is a missing permissions node?

I had the same issue. I hunted forever until I found this:

multiverse.access.*

not to be confused with

multiverse.portal.access.*

which I had already added, which confused me a lot at first.