@sidhartharoul I'm experiencing the same issue since yesterday.
Mine same..have valip ip..but nk internetI am getting no internet alert frequently. Though PPPOE is connected with valid IP. Experience same since morning 3 -4 times , not sure if it because of the maintenance.
Did you checked today? Today my BSNL Pro app and usage page showing 50mbps,yesterday it showed 100mbps.yes , my 777 plan getting 100 Mbps now. Location : Ernakulam Business Area in Kerala.