Let's run the quick checks first — this fixes it most of the time:
2. Restart NinjaTrader 8 completely (close it fully, reopen). The license check runs at startup.
3. Right NinjaTrader account? Your license is tied to your NinjaTrader account email — make sure NinjaTrader is signed in with the same account you subscribed with. A new machine is no problem (nothing to move) as long as it's the same NT account. If you've changed your NT account email, submit a request through the support form and I'll update your license.
If all three check out and the tools still won't load, submit a request through the support form with what you see (any error message helps) and I'll dig in.
Bernard