I know it always feels like it is "abandoned", but it isn't (it's serving millions of requests every day, especially for major iOS and Android apps!). The truth is I rarely have the time to improve upon it, especially because I've been (deep) in the red for so long it kinda affects my RoI to work on it.
Nonetheless, a couple of months go I completely rebuilt the backend and managed to triple the load we can handle. Still, we're constantly overloaded and I can't upgrade the machine due to the aforementioned lack of funds.
However, I am hoping to revamp the service over the next months, keeping it free, updating the docker image to a much more recent one, closing up PRs and perhaps finding ways to monetize it (again, while never making the free offer worse -- I hope to make it better, instead)
(I've been saying this for years but this time I think the right conditions are there)