I added a new list with the same columns to Sharepoint and created an identical flow, but the new flow is not working.
It's pretty simple—it looks at a list, extracts the birthday, converts it to day/mo, compares that with today, and then, if it's a match, sends an email. The second flow is identical. The only variable that changed was the list, but the list format is the same.
The error is: Unable to process template language expressions in action 'Birthday_Month_Day' inputs at line '0' and column '0': 'In function 'formatDateTime', the value provided for date time string '25639' was not valid. The datetime string must match ISO 8601 format.'.
I don't know where it would have gotten a random 5-digit variable from.

This is the format of the birthday in list 1

This is the format of the birthday in list 2.
I assume it has something to do with the format, but in excel, they were both formatted short date the exact same way, but when I uploaded, they didn't upload the same. Thoughts?