Wordpress Assistance Required - Edits and Troubleshooting

There are 5 things we need help with on our website: 1. Age Gateway Entry Design changes to the existing age gateway popup (Mostly CSS). Image of design will be provided. 2. Checkout Page: The confirm order/buy button shape should be changed to match the style of the other buttons on the website (Min width and padding). 3. Order detail export help: Woocommerce PDF Product Vouchers We sell gift vouchers on our website using Woocommerce PDF product vouchers. Each voucher purchase generates a unique coupon code. We export order details via Woocomerce Order CSV export. We would like to export the generated coupon when we export each order – however, we’re uncertain what meta we ned to use. 4. Upload tracking numbers from CSV We would like to upload tracking details to our orders – the tracking details are stored in our orders using the woocommerce Shipment Tracking extension. We have been unable to resolve the required CSV formatting to make this upload work successfully. We need help with this. 5. Product pages – white space glitch On our product pages – a white space is present at the bottom of the page. please fix the cause of this glitch. Please resolve the cause of the problem, do not just code a patch Please ask as many questions as you need to complete this project. There may be a couple other things – but let’s start with these