Hi! the same is happenning to me. I'm already logged in uniday.studio and in itch.io... and I allways get the "Pay" page when I click on the three downloads...
Viewing post in i can not download the engine
Due to the amount of new users getting the engine right now, the server is having a hard time catching up. Please DM me in our website: https://uniday.studio/user/UnidayStudio and I'll manually confirm your purchase for you.