connecting tenda N 300 router with jio fibre modem

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JioFiber Wifi Range Extend from Old Router - Wirelessly and wired method , SOLVED !​

Am trying to connect my tenda router with my jio fibre(Plan 999) wirelessly..but inspite of this video gyaan...it wont connect.can it be an issue of wi fi range and should i think of a LAN connection to achieve this,im trying to connect to a home security camera placed in another room approx 100 ft away where the jio fibre doesn't reach