In all likelihood... Bitsler have probably changed something on their end... ie. updated the API either without giving Seuntjie a headsup, or the opportunity to update the bot... or they did, and Seuntjie hasn't updated due to being super busy...

If the bot is working on other sites, and it is just Bitsler that isn't working, then you'll have to hold tight until Seuntjie has a chance to investigate and/or talk to the Bitsler Devs.