Issues with Weekly Slack Channel Summaries from Lindy

I'm trying to have Lindy get me a summary of a Slack channel every week (take the messages fromt he last 7 days and give me a summary). It's been really rough going so far. Multiple times it gave me messages that were well over a week old. When I asked about where it pulled those messages from, and what date, it consistently got the date wrong. Finally after asking it much more carefully to only give me the last 7 days of data, it told me that wasn't possible, and that it can't see dates in Slack 😞 Any help is appreciated!