I usually leave the game running in Meowruto RPG. This has no problem going for any length of time. When I leave it going in the main game it seems to crash eventually. I have found with many games in itch that my errors cannot be repeated on devs machines as my PC is a dinosaur, a real low-end PC. I have had similar issues playing another game and chatting to the dev there.
It is easier for me to send things on Discord or WeChat. Do you have either?