I need a few amendments to my current Shopify Website

I need a shopify expert to make a few amendments to my current live site, www.tayyibnaturals.com

Details are as below.

FOOTER DISCLAIMER
I want a footer disclaimer to be added to the website which is visible across all pages (see below):
Disclaimer:
Tayyib Naturals products are not intended to diagnose, treat, cure, or prevent any disease.
All information on this website is provided for educational and general informational purposes only and should not be considered medical advice.
Always consult a qualified healthcare professional before using any supplement, especially if you are pregnant, breast-feeding, taking medication, or have a medical condition.
Results may vary from person to person.

SUBSCRIBE & SAVE DISPLAY BOX
I want a box for our Subscribe & Save option on the products page when you view our Joint Health supplement with the following text to be added (see below):
✔ 25% off every order - only £25
✔ Always free UK delivery
✔ Flexible subscription. Cancel anytime.
I've attached a screenshot as an example of how the box can be, but please incorporate a colour themed box that fits with the company (colour codes are #00bf63, #7ed957 & #35384b.

I also want to introduce a referral scheme onto my website which rewards customers and new customers. The way i want it to work is as follows:
- An existing customer receives 15% off for every new customer who places a first-time order.
- The new customer will also receive 15% off their first order with us.
- There is no limit to the number of NEW customers that can be referred. For every customer they successfully refer (meaning new customers that make a purchase via their referral link), they'll get 15% off an order.
- When a new customer uses a unique referral link, the discount will automatically be applied to their first order at checkout (important that it is automatically applied at checkout to their first order and not manually written).
- Whenever a customer has made a purchase via a referral link, an email confirmation needs to be sent to the person who referred the customer. This is so they can track how well they are performing.
- If a new customer cancels an order before fulfillment, the referral discount for the customer won't be valid and the reward for referring will also be cancelled.
- There needs to be a portal for customers to track their referrals (can be incorporated onto the site or via an email link which directs them to the portal).

Would like these changes implemented ASAP.

Budget I've set aside for this is £100. Non-negotiable so please only send proposals if you are happy with the scope of the work and price that has been set aside.

In addition to setting up the referral scheme technically, I need the referral programme to be clearly advertised and visible across the website so customers are aware of it and encouraged to use it.

Please include the following promotional placements as part of the scope:

A site-wide announcement bar (or similar) highlighting the referral offer (e.g. “Give 15%, Get 15%”).

A referral promotional card on the Joint Health product page, positioned near the price or Subscribe & Save section.

A cart or checkout reminder encouraging customers to refer friends.

A post-purchase referral prompt on the post-purchase page encouraging customers to share their unique referral link.

A dedicated ‘Give 15%, Get 15%’ page explaining how the referral scheme works.

Referral access integrated into the customer account area where customers can view their referral link and referral performance.

Design should match brand colours:

#00bf63

#7ed957

#35384b


Copy should be clean, catchy, and conversion-focused.
All referral CTAs should link directly to the referral portal or referral page.