Hello and thank you for reply.
Yes we tried to reach out the support of itch.io multiple times (from november 2021 to february 2022) over period of 4 months and also this way today) at the moment all efforts without success, but we are not losing hope.
The individual file size is the limitation in our case as we are decreased 4Gb size of files (over 2000 pictures sounds and animations) into size of just 200mb, we are at the moment at 250mb and can't get lower without rapidly decreasing the quality which would make the game unplayable because of visual artefacts on the images (We have a story game of 50+ hours of gameplay to justify why the game is bigger) Plus we have been working on this project for 4 years so the size added up piece by piece. And we are receiving questions like why we can't do it and the thing is we would love to do it. We are trying as humbly and gently do it here and hope for the lightning to strike and achieve this together.
(NSFW WARNING) This is our page itself: World of Sisters by Sexy Goddess Game Studio
We will answer all the questions if any.
Have a wonderfull day.