I changed it, after 30 minutes internet went down, then I changed the password inside ONT.@Adithya @Gaurav15
Is the PPPoE password change done via https://fuptopup.bsnl.co.in/ instantaneous? Is there any delay for change to take effect. If yes, how long? And is there anything else to be kept in mind to make this process foolproof?!
Sorry again for topic-hijacking the thread but I feel what discussed is somewhat relevant to the original topic.