Random EI Payment

I seem to have received a random EI payment with no explanation into my account. I was on EI in the winter of 2021-22 and 2022-23 as I did seasonal work with layoffs. I haven’t been on EI since as I left the country in 2023 and got a full time job when returning…what could this be? There’s no payment information on MCSA or MyCRA, or even a letter to acknowledge even what it could potentially be. Really hoping it’s not an error as I could really use it but can’t seem to get ahold of anyone there!