The paint in my bathroom is peeling. We rent, but our landlords are pretty casual/unhelpful about repairing anything that's not an immediate health and safety issue, so if it's possible to fix this reasonably easily and cheaply, I would just as soon do it myself.
The bathroom was redone about 8 years ago, and the paint above the (fiberglass?) bath enclosure is particularly bad - big chunks of it have come off. The underlying substrate is hard and has ridges. The flakes that are coming off are thick - it's not just paint, there's some kind of compound (possibly just drywall joint compound, ugh) that's been used to fill in those ridges. See photos below (sorry, both are on their sides - the ridges run perpendicular to the floor).
Anyone have any thoughts about what was *supposed* to be done here vs. what has actually been done here? The paint is also very matte for a bathroom, and tends to get mildewy (no fan in the bathroom, which doesn't help).