Help! My prints are failing and I can't figure out why

[frierson22]

I've had my Tronxy XY for over a year now. I've learned a lot thru trial and error and have gotten some really good prints. I use Repetier slicer. About a week ago I started having problems with prints falling apart. I have tried cleaning the nozzle, changing filament, changing settings, changing temperature, changing models. I triple checked the bed level. When none of that worked I changed the nozzle thinking for sure that it was clogged. Still no luck. I can print flat on the bed OK, (see the green broom holder pic) but anything with any kind of wall or feature that builds up off the bed doesn't stick together. My last test was to try a desk top organizer that I printed successfully, with the exact same settings and temp, just a couple of weeks ago and it also failed. (see gray stringy pic). I don't know what is wrong. Anyone have any ideas? Thanks