Are there device limits or is it a user limit?
Your plan determines the number of users and devices that can be signed in simultaneously onto the same account.
Currently, all users on a plan need to log in using the same email address (the account owner's login). So while multiple users can share access on the Premium and Ultra plans, they must do so by logging in with the same account details.
Lite & Standard: 1 user
Premium: Up to 2 users
Ultra: Up to 4 users
There’s no hard limit on the number of devices you can use in total, only the allowed number of users for your plan can be signed in simultaneously - one device per user.
Can I use multiple devices?
Yes! You can switch between devices freely. Just keep in mind that only the number of users included in your plan can be logged in at the same time.
Note: Projects do not carry over between devices, but your personal presets will.