It is a shame. The bot had potential, and it suffered because of some hiccups lately when the service was up. However, I can understand that you were not able to get enough delegation to depend less on other bots as you proxied the bids.

Although I tried the bot mainly at the beginning for giving small votes to other authors and were not able to use it as much for my content as other people because the frequency of publishing is low on my side, I can say that I liked this bot in the end. You tried to do something different despite resembling other bid bots, and I think your userbase liked the service too.

Anyway, there seem to be some inquiries regarding latest bids that need your attention, and if you are shutting the service, it would be nice to see the issues and resolve them.