In the first step you should check that your domain renewal must be at least 60 days. After that please complete below steps :
1- Unlock and Unshield your domain in the source registrar.
2- Get your domain EPP code from the source registrar.
3- Login to your client area through the link https://my.digiturunc.com
4- Click on Domains from the topbar and then click on Transfer Domain.
5- Proceed the steps and enter the required EPP code.
6- An invoice will be generated for the related transferred domain renewal for one extra year (transfer procedure is fee free and the related generated invoice is for 1 year renewal of transferred domain)
7- Complete the payment and the considered domain will be on our panel and we give you Domain control panel access to manage your domain and renew it from this panel.