RNE-L21 FRP Unlock Error

SigmaKey v.2.29.01
New version 2.29.01b2 is available on www.sigmakey.com. We strongly recommend to update SigmaKey!
121261525 Sigma dongle 2.29, Initializing...OK
Pack 1: Activated
Pack 2: Activated
Pack 3: Activated
--------- 2018-09-07 16:15:00 ---------
SigmaKey 2.29.01 HiSi: Remove FRP / Huawei ID
Phone model: RNE-L21
Version: :RNE-L21 8.0.0.332(C185)
Preparing...The phone is NOT connected properly. Read the manual at the official site for details.
--------- 2018-09-07 16:15:30 ---------
SigmaKey 2.29.01 HiSi: Remove FRP / Huawei ID
Phone model: RNE-L21
Version: :RNE-L21 8.0.0.332(C185)
Preparing...The phone is NOT connected properly. Read the manual at the official site for details.
--------- 2018-09-07 16:15:40 ---------
SigmaKey 2.29.01 Qcom: Remove FRP / Huawei ID
^ Android Sooner Single ADB InterfaceCommand not allowed
--------- 2018-09-07 16:16:05 ---------
SigmaKey 2.29.01 HiSi: Remove FRP / Huawei ID
Phone model: RNE-L21
Version: :RNE-L21 8.0.0.332(C185)
Preparing...The phone is NOT connected properly. Read the manual at the official site for details.