To request a replacement key:
1) Go to your account management in mikrotik.com and fill the "support contact form" or write a direct e-mail to email@example.com
*) Please provide detailed information about why replacement key is required
2) Send required info to MikroTik support department.
3) Re-check your account after support staff has confirmed that replacement key has been added to your account. Select the section "Make a key from replacement key"
4) Select the appropriate license level on which you wish to perform the replacement
5) Enter the new "software-ID"
6) Proceed to checkout by pressing "Add license replacement to cart" and finish the payment
7 You can find the newly generated key in the section "Search and view all keys" under the folder "Purchased YYYY" where YYYY is current Year