to be perfectly honest, walang way para ma bypass ang otp ng gcash. heavily secured ang system nila for that. anyone claiming they can bypass it is most likely a scammer trying to take advantage of your situation. please wag ka magpapabudol sa...
usually limited yung speed pag mabagal yung cable, usb 2.0 lang yung port kaya hindi full speed yung tether. try mo gumamit ng original/data cable, lipat sa usb 3.0 port, update/reinstall network driver ng tethering sa device manager kung 40mbps...
try mo muna i-check kung anong exact model ng onu/router mo, kasi hindi lahat ng converge huawei same ang superadmin creds. madalas din napapalitan na yan after update or provisioning ni isp kaya hindi na gumagana yung telecomadmin.