I wrote to appsumo support to get my refund but didn't get a specific response, just:

Please contact us once you've transferred your data anytime before January 31, 2025 and we'll be happy to process your refund under our We Got Your Back guarantee.

I transferred my data and deleted every site linked to Illow so I wrote again to get my refund but still got the same response:

Please contact us once you've transferred your data anytime before January 31, 2025 and we'll be happy to process your refund under our We Got Your Back guarantee.

I was expecting a response like ok, we've processed the refund. It seems like the refund process is a bit opaque.