Apologies for not providing enough instructions about how to repair the situation, I didn’t see you were a new user.  I made some additional fixes here, namely restoring the building (the building is still there and should be kept, but without its "religious" attribute if the chapel is mapped separately).

Normally, changes on osm.org are visible within 5-10 minutes at zoom 19.  The map you see on osm.org is a collection of PNG images that are regenerated by a server; this server redraws a new image when something changes in an area… but sometimes the server is overloaded when there are too many changes at the same time. I will investigate to see what happened here.