On my stationary PC, I have access to Excel, yet on my laptop which I just bought (With legal Windows 10 ), It says that most of Excel's functions will not be available in 5 days form now. Mind it I DO use the same gmail. Help me please.
Check in Excel File->Account if any account is assigned. Play here with options - assign license, etc , depends on what do you see here. Before be sure if your license allows installation on two computers, perhaps you have license for only one installation.