Tried it, keeps my chain cleaner than with wet lube but is no miracle solution to commuting in wet semi-dirty conditions. About to mount brand new chain and cassette, again. I find degreasing the chain to be both difficult and expensive. Wax is expensive up front, but last a long time.
I had the exact same thing yesterday. Clear app data made it work again.
Meanwhile in Sweden the fee is capped at about $200/month.