What platform are you playing this on? Any computer specs details could help.
Interesting. It could be a device incompatibility. (Not sure how old your phone might be.) Additionally, I know some people for whatever reason load games on itch via Joiplay, and other 3rd party apps for their ren'py games which might cause some other incompatibility issues.
I just downloaded 6.2 from the page just now onto my own mobile device with no issues, only about a couple second delay as it loads the game in before showing the title screen. My best recommendation would be to either re-download or try switching to the PC build.