Welcome to TPG Community!
Have you tried using a different browser and deleting the browsing history? What's the error message?
Can you provide us the make and model of the modem you're using at the moment?
Hi @chinsoo, we'd like to know if you are still having issues.
If you are using a TPG supplied modem, you can perform a hard reset on the modem to return it to its factory default settings.
Should you need any assistance, feel free to drop us a message. Thank you.