Apparently several restaurants went down Labor Day afternoon. I mobile ordered fine at 3 locations (Cafe Le Siren, Burning Blade, Pizza Moon), then tried to get Toadstool Cafe for dinner and left when the entire restaurant was having issues with missed orders and food. I walked to Oak & Star, and their mobile order was "just fixed." Worked out fine, thankfully - food was great and came out super fast.
I'd shrug and think it was a fluke if the same thing didn't happen to me at Minion Cafe months prior and my order (along with dozens of other guest orders) was lost. I've shared my story there before so I won't repeat, but I feel like Universal Mobile Order has it out for me personally at this point.