i could not be able to open the mobile applications (Amazon, Amazon Prime, mynthra, flipkart, swiggy, zomato, kerala matrimony, Paytm etc ) on any phones. I checked using 3 mobile devices. Most of the mobile applications and some websites like hdfcbank.com are not working. The problem started when the Keralavision cable operator was shifted from old operator. The operator changed the settings during that transition process and reset the modem. After that only this problem started. The modem brand is NET LIND and the Model: 2801RW. Please help me with this