Assuming you are flying via DEL, this connection is dead on arrival. 6E 2411 to JDH leaves from T2, TK arrives in T3. You will not make it to the checkin desk within the time limit (T-60min) at 5.50am if you land at 5.15.

https://www.goindigo.in/travel-infor...formation.html

https://www.goindigo.in/travel-infor...uirements.html

That said the online checkin works fine even if you used an international credit card to purchase your ticket, I checked in for my 6E flights to/from Goa about a year ago using the app.