WP site Merchant acct Implement, email delivery system install

We are a Travel Promotion Provider. Looking to get some work done on our WordPress website.

We have a travel portal site and the website is built as a landing page which is connected with the travel portals for our members. The travel portal is hosted on a different server than the website. The travel portal can only be accessed by the members who have signed up for the service. Once the members sign up, they can visit the landing page using their email address and a generic password which is provided to them at the time off signing up.

After they are able to make the reservations for their vacation. The connection between the travel portal and the landing page has already been secured through an API. However, when the membership is manually created or automatically created the emails for the confirmations are not being delivered to the members we need to have that fixed.

Besides that we also have two merchant accounts that we need to implement with the site for the travel portal membership purchases. (Square and Stripe) Those merchants accounts should rotate between each other and for every alternate transaction. We should be able to change the price at the back end at any given time. Once a transaction from the customer is being processed the customer should receive a confirmation email automatically as well as having their membership created for every successful transaction automatically.

We can give you more details once hired for the project.

We are strictly looking for experts who can get this project done since we are on a time schedule.