Thousand Thanks to Mr. amjed wrote this blog post, it save me from calling the never-ending-music-playing TM operators. Refer original post from Mr. amjed for detailed step-by-step instruction: recover pppoe password TRG212M UNIFI
Guess what, it works perfectly for me! Now i’m able to connect my newly bought Synology RT1900ac router to the internet.
Steps in brief as below,
i) open Chrome browser, go to 192.168.0.1, log-in
ii) lick on “Wizard” tab, then start
iii) press F12 to bring out developer console
iv) go to console tab and type
document.getElementById('INPUT_PppoePsd').value, press Enter and the password will be display