Do I have to use router admim Longin to use the Time Machine function?

[qneeuqeo]

I have Rt-AC68U and asuswrt-merlin 3.0.0.4.376.48_1

I tried to set up a seperate user account to back up my macbook, but always failed to connect the dick unless I use the router admin Longin name / password.

For security reason, I don't want to use user admin for the backup purpose only.

Anyone knows if to time machine can be working with user created account other than the admin ?

Any advice is appreciated. Thanks.