Follow these steps if you are not logged into your account.
Visit aissista.com
Click the Pricing section.

Select your desired package.
Click Get Access.

A login page will appear.
Log in using your preferred method.

You will be redirected to the payment page.
Fill in the required details:
Card Holder Name
Email (for receipt)
Postal Code
Card Information
Coupon Code (optional)

Enable or disable Auto Renew based on your preference.

Click Pay to complete your purchase.
If you are already logged in:
Go to the Dashboard.
From the left corner, click Membership & Plan.

Continue by following Step 2 to Step 6 from the previous section to complete your purchase.