Issue with Lindy Tool Draining Credits During Testing Phase

I just encountered an issue that might make me stop using Lindy altogether. It's so dissappointing as I had high hopes for the tool. I had about 10k credits, and wanted to test a function that should look at the last 20 emails (max) and then loop over them to move them. So, as the test started - I noticed my credits were running out like something crazy - so that within 1 or 2 minutes I went from 10k credits to 2k credits. I've recorded a piece of it. I even disabled the workflow, but it didn't stop the credits from running out - see in the video. Given that this was during a test - and not even deployed... and I couldn't stop it... it doesn't feel like a sustainable way of working to me. If I look at the logs...I can't tell why it would've done this.