Details and Options
The expression expr must be numeric when its argument z is numeric.
ResourceFunction["NLimit"] constructs a sequence of values that approach the point z_{0} and uses extrapolation to find the limit.
ResourceFunction["NLimit"] is unable to recognize small numbers that should in fact be zero.
Chop may be needed to eliminate these spurious residuals.
ResourceFunction["NLimit"] often fails when the limit has a power law approach to infinity.
The following options can be given:
WorkingPrecision

MachinePrecision

precision to use in internal computations

Direction

Automatic

vector giving the direction of approach

"Scale" 
1 
initial step size in the sequence of steps

"Terms" 
7 
number of terms used to evaluate the limit

Method

"EulerSum" 
the method used to evaluate the result

"WynnDegree" 
1 
degree used in Wynn's epsilon algorithm

The option
Direction→d specifies that the approach vector to a finite limit point
z_{0} is given by the complex number
d. The default setting
Direction→Automatic is equivalent to
Direction→1, and computes the limit as
z approaches
z_{0} from larger values.
ResourceFunction["NLimit"] approaches infinite limit points on a ray from the origin.
The option "Scale" specifies the initial step in the constructed sequence.
For finite limit points x_{0}, the initial step is a distance "Scale" away from x_{0}. For infinite limit points, the initial step is a distance "Scale" away from the origin.
The accuracy of the result is generally improved by increasing the number of terms, although increased
WorkingPrecision will also usually be necessary.
Possible settings for
Method include:
"EulerSum" 
converts sequence to a sum

"SequenceLimit" 
constructs a sequence

The option "WynnDegree" specifies the number of iterations of Wynn's epsilon algorithm to be used by "SequenceLimit". In general, there must be at least 2(n+1) terms for n iterations.