Question About Clay Credit Usage for Integrations and Functions

Hey Clay folks, I was working on a workbook using the following Clay integrations/functions:

Both functions cost zero Clay credits. We had 999 credits left but after running the above-mentioned integrations, it seems that all remaining Clay credits were consumed. Any idea where those credits go? Link to workbook: https://app.clay.com/workspaces/226909/workbooks/wb_ZruspT5FoeKb/tables/t_XGhBXPeun87a/views/gv_hhWnJt2Sk4r8 Thanks! 🙏