Welcome to the forum! I'll start things off with a stab at your issues. Someone will likely chime in with better ideas, but here goes.
On the Axxera, look for a video on the web for removal. Way back when, I had to do that to see how to make removal easy. Sounds like you might have a bad fan switch. If you can get a number from it, you can probably order replacement from the internet. Or maybe find a match at your local auto parts store.
Have you looked under the sink at the hose to the faucet, checking for a kinked hose would be a first step. Take the diffuser off the faucet and see if it is plugged. If you have decent pressure everywhere else, you've got an obstruction in the line somewhere.
We carry a small folding step for when the levelers make for a big stretch. The one we have can be used folded for about 4 inches, or extended for about 10 inches. When we are traveling, Mrs S likes it under her feet in the folded position.
Bonus: We use a carpet sample cut lengthwise on the steps to catch the dirt and sand from our feet. Even though we usually remove our shoes when we enter, the carpet pieces help keep the coach cleaner. Mostly we use a low shag, but for the beach it is indoor-outdoor.
Only some of us learn by other people's mistakes, the rest have to be the other people!