I have a C205 pico mini projector firstly I cannot register it with the serial number

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POUPSVINCE
POUPSVINCE Member Posts: 1 New User
edited March 10 in Projectors

Hello
I have a C205 pico mini projector firstly I cannot register it with the serial number on the ACER website for some unknown reason.
Especially stains appear during the projection and I don't know how to clean a mini projector (I found tutorials for large ones but not for mini ones) please help me
[Edited the thread to add issue detail]

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