If you would like to use Arnold in production, you can buy a license from Solid Angle. With a valid license key installed, the Arnold watermark will disappear from your rendered images. Solid Angle issues floating licenses.
If you have a floating license, please refer to the licensing page for instructions on how to install it.
The RLM licensing tools can be found under <max_root>/Plugins/MAXtoA/license
Once you have sent us the Mac address and received your license (.lic) file, you can install it. After installing it correctly, you will be able to start rendering with MAXtoA.
You must place the .lic file into the root folder of the MAXtoA plugin:
Information about setting up your license using an Environment Variable can be found here.