When you first download and run the software, it operates in Startup Delay

To ensure a smooth license key update process:

Do not attempt to enter a v7 key into v8 — it will fail. Instead, uninstall the old version, install the new one, and apply the new key.

: License keys are sent manually by the developer after purchase. You should receive a transaction confirmation first, followed by a second email containing your actual key code.

Contact Simply Modbus support directly. Provide the name, company, and approximate purchase date. They will resend the key after verification.