Where are you located ?
Can you send me your IP in private so I’ll confirm you didn’t blocked by the firewall ?
Can you send me an image of what you see ?
Because at my end, the website works well.
I found solution…
in wp-content/plugins/woo-accordions/assets/js/woco.accordion.min.js
You change: firstChildExpand:true ===> firstChildExpand:false
And it starts closed