Objects getting stuck on tilemap. Seeker not registering the tilemap collider?

I have tried adjusting the parameters on the A* scripts that other forum posts have suggested but to no avail. Since that didn’t work, I put most of them back to their defaults.

It seems the path isn’t detecting the tiles on the tilemap grid (the gizmo green lines go straight through them).

I have tinkered with the RB/collider settings and moved things to different layers and so forth, but can’t seem to get around this (no pun intended).

Really new to A* and Unity in general so forgive me if this is a stupid question.!