Deactivate the old Mac, then use the same key on the new one. Your license and your saved layouts are separate.
Free the old Mac’s place
On the old Mac, open CubbyPad Settings › License.
Click Deactivate. This frees one activation in your plan.
Keep your license key from your Dodo Payments receipt.
Activate the new Mac
Install CubbyPad on the new Mac and paste the same key in Settings › License. Click Activate while connected to the internet. Solo allows one active Mac; Duo allows two. You can use Duo on a second Mac without deactivating the first if a place is free.
If the old Mac is gone
If the old Mac was sold, wiped or stopped working before you could deactivate it, email support from the address used for the purchase. Include the order or receipt number and explain which Mac is unavailable. Support can free that activation.