I can definitely understand how important this is - let's see if we can work together to resolve this issue! When you say "Paypal is not working" - can you show me the exact error you are seeing? A screenshot of the problem would be really useful to help guide my troubleshooting.
A common issue I see with PayPal is the incorrect email address being connected to the account:
When you set up your Shopify store, Shopify creates a PayPal Express Checkout account using the same email address you use to sign into your store. If you already have a PayPal account with that email address, then you receive payments from orders made with PayPal right away. If you want to issue refunds or manually capture payments, then you need tofinish setting up your PayPal account.
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