Assume every password stored on that PC is compromised. Use a password manager like Bitwarden (free) to randomize them.
You try to connect to a server in London to watch BBC iPlayer. ExpressVPN’s servers detect that your client is not validating a license. The server blackholes your connection. You try Japan for Netflix. Blackholed. You try P2P. Blocked.
The crack likely installed malicious extensions. Go to Chrome/Edge/Firefox settings and "Reset to default."
Pull the ethernet cord or turn off Wi-Fi. This stops the malware from phoning home.