Cannot download my purchase

Hi all,

I was quite excited to see an engine like Cave Engine after discovering it via Gamesfromscratch.
I signed up on the Discord server as well.
I decided to purchace Cave on 15 November 2025 via Itch.io However, have been unable to download the engine (Version 1.3) via the Itch.io download button. If I click on that it takes me to the Uniday Studio website and says I need to pay for the engine.
I have reached out on the support chat as I saw a post, that said they had issues with some payments and they can fix it if one contacts them via Direct message.
No one has replied yet.

I know this has been over the holidays but this experience is not exactly filling me with confidence on the support front.
Has anyone else had this issue and if so who and where did you contact to get it resolved?