Our system will automatically let you know when it's time for renewal in advance and in same cases try and renew the domain for you automatically (if auto-renew is enabled) and you have a payment method on file. Otherwise, you are welcome to login to your secure client area and renew the domain anytime manually in advance.
You can unlock your domain via your secure billing portal here -- https://www.seodomains.pro/clientarea.php
Once logged in simply click on the "Domains" drop down or button followed by the domain you want to edit. Via the navigation menu on the left click on "Renew" and follow the step through the checkout process.
If you have any issues, please contact us and we'll be happy to help.