An update just now, since we were in Canada fishing last week.
Figured out our problem - this spring we had installed a new water filter (the best one). We think it got plugged up when our campground owner did work on the wells. The water flow slowed down a lot in RV, so much so that our washer stopped working & buzzed with an "H20" error code, which we're not sure what that meant. Anyway, we took the filter out, and now improved water flow & washing machine and fabric softener dispenser works great! We're getting a new water filter, just the basic white one.
34SK model that currently stays at River Country Campground, near Evart MI