I turned off the Alexa skill and my shutters appeared. Thank you for your help.
Too bad I canât use the Gladys shutter positions with my Somfy RTS.
This is a limitation of the RTS protocol, which is unidirectional, so the shutters cannot report their position.
@elfedagger For your Somfy RTS and position, you can use the official Matterbridge plugin (Tahoma Somfy) and specify the time it takes for your blinds/shutters to go up/down.
This will allow you to have an approximate position. However, only if you control everything via Gladys (and Matterbridge, therefore) because we donât retrieve what has been commanded by the RTS remote controls.
I already use wait times in certain scenes with my shutters. For the Tahoma Somfy plug-in, you need a Tahoma box, and I donât want to add another box to my system. I already have a hard enough time troubleshooting when itâs broken 
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I add that the installed version is an LTS for « Long Time Support » and that after 5 years, security updates are no longer available for free. At that point, you need to upgrade the OS to a more recent LTS.