Wordpress theme doesnt work and theme support is not responding

I purchased a Wordpress theme ( Democracy Political - Lawyer WordPress Theme by Kodeforest from Themeforest. After installing the theme on a fresh wordpress i found that the builder isnt working or not editable and outdated. it doesnt even support wordpress version after 5.7. Almost everything is broken there. So I reported a bug through their support channel. Its been 6 days, i didn’t get a porper reply.

what should i do now?

As it’s been informed/advertised compatible with 5.7, you need to downgrade your WordPress version if you want to use it without any extra steps.

Software Version : WordPress 5.7.x, WordPress 5.6.x, WordPress 5.5.x, WordPress 5.4.x, WordPress 5.3.x

Last theme update was in 2018, I don’t think the author would update the theme any time soon.
If you check the “reviews” for the theme, it’s not really good. You may try to request a refund, author would probably reject the request but you can contact Envato for the issue. They may find you a solution