As far as we can tell, there should be no issues with purchasing OSH here on itch.io, but there may be some regions/countries that have imposed new regulations or restrictions. Can you provide more details? Thanks!
Thanks for following up, Brushies! I'm sorry you're having issues. We are seeing that other people are still purchasing Oh So Hero successfully, so perhaps something is amiss with your itch account? I hope support gets back to you, but with everything happening now, it might be a wait.
If you just want the most recent version of OSH and don't need constant updates, you can join Patreon for one month and grab the latest build ($5 for PC or $7 for Android also). But ultimately itch will provide free updates for Act 1. Same for Steam!
Links to other stores here: https://ribbit.fun/