“This license is already in use on the maximum number of machines”

What you see

Signing in on a new computer returns “This license is already in use on the maximum number of machines.” On a machine that is signed in, the Account page’s Devices card shows “Active” machines against the maximum with a bar, and “This device” with the start of its machine id.

Why it happens

Each sign-in sends the machine id with the email and password, and the server binds the machine to the licence. When the bar is full, a new machine is refused until a slot is freed. A reinstalled or replaced computer can count as a new machine. Renewals do not recreate a machine that was removed: after a definitive refusal the app signs out instead of re-registering.

How to fix it

• On a signed-in machine, open Account → Devices and click “Manage devices →”; the website page lets you remove a machine you no longer use.
• Use “Copy the full machine id” on each computer to recognise it in the website list.
• Sign in again on the new machine once a slot is free.
• If no machine is signed in any more, open the devices page from your account on senzoukria.com directly.

What it is not

• Not a subscription expiry: that has its own message.
• Not a broker limit on simultaneous sessions, which concerns your broker login.

When to contact support

If the message comes back after these steps, report it from Menu → Report a problem (it works without being signed in) or on the Senzoukria Discord. If the devices page shows free slots and the refusal persists, include the machine id copied from the app.