PayPal payment not working

https://prancingdeers.co/?tribe_tickets_redirect_to=https%3A%2F%2Fwww.paypal.com%2Fcgi-bin%2Fwebscr%2F_cart%3Fcmd%3D_cart%26add%3D1%26business%3Dadhikariweb%2540gmail.com%26bn%3DModernTribe_SP%26notify_url%3Dhttp%253A%252F%252Fprancingdeers.co%26shopping_url%3Dhttp%253A%252F%252Fprancingdeers.co%252Fevent%252Fshiamaks-dance-a-thon-khar%252F%3Fclear_product_cache%3D1%26return%3Dhttp%3A%2F%2Fprancingdeers.co%2Fpayment-confirmation%2F%26currency_code%3DUSD%26custom%3D%257B%2522user_id%2522%253A1%252C%2522tribe_handler%2522%253A%2522tpp%2522%252C%2522pid%2522%253A3449%252C%2522invoice%2522%253A%2522w1dw82WWDSHg%2522%257D%26quantity%3D1%26amount%3D400%26item_number%3D3449%3A3456%26item_name%3DOnline%2BBooling%2B-%2BShiamak%2519s%2BDance-A-Thon%2BKhar#buy-tickets

I get HTTP Error 403 – Forbidden error when trying to make payment.

All plugins are disable to check conflicts.
Also followed all settings to paypal and plugins.

Please Help

Site URL – https://prancingdeers.co/event/shiamaks-dance-a-thon-khar/?tickets_process=#buy-tickets

Thanks

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