Huawei P10 Lite: Fingerprint Reader Malfunction after Screen Replacement and Battery Cover Removal

Hello.
When replacing the screen, I peeled off the back cover of the battery and instead of detaching the fingerprint reader tape from the plate, I pulled it from the reader from the flip. In the socket it was necessary to slide out the small plastic "protection - pressure" ........ and here the problem begins, because it came out completely. It's so small that I don't know how to mount it. After inserting the tape itself, the reader does not work and the system does not see it in the settings.
Could it be the fault of the lack of this plastic .... does it press the tape to the pins?
Thank you in advance for tips and tricks.

Rather, the fault of the lack of this plastic.

Well, without a good magnifying glass or a visit to the site will probably not do.
Although the tape sits firmly and firmly in the socket.

Added after 3 [hours] 33 [minutes]:

Problem solved . Somehow I was able to mount this plastic and everything returned to normal ...... apparently its task is to press the tape to the pins.
The topic can be closed.