When you purchase a Lychee Slicer license, it is linked to the email address you have used to create your Lychee Slicer account.
To create a Lychee Slicer account you can register on our website https://account.mango3d.io/auth/register
With Lychee Slicer Free and Pro you can install Lychee Slicer on 2 computers and use the same logins to access your account.
With Lychee Slicer Premium you can install Lychee Slicer on 4 computers with the same logins.
You can compare both plans here https://mango3d.io/compare-lychee-pro-free/
If you have already installed Lychee Slicer on your maximum number of computers you can revoke your computer slots in Lychee Slicer.
File > Preferences > My Account > Saved computer list
If you are unable to revoke your computers to free your license slots, please contact our support team: https://mango3d.io/contact-us/