Is it a speaker that you have used previously. or have you purchased it used? If it’s the latter, do you know if it was previously used on an S1, or S2, system by the previous owner? 

As an example, if it was previously operating on an S2 Sonos system and you want to now use it on S1, you will first need to factory reset and downgrade the speaker as outlined in this link;

https://support.sonos.com/en-us/article/downgrade-a-sonos-product-from-s2-to-s1

If you want to move the speaker to S2 later on, then either use the S1 App compatibility checker, or reset the device and add it to the S2 HH using the ‘Add Product’ option in the S2 App.

Once you have added the speaker to your S1, or S2, system contained within your Sonos account, it will then show up in your Sonos profile (which has the same login/account credentials).

Hope that information assists and answers your post here.

It does raise the specter of what speaker this really is. There is a Sonos PLAY:1, and a Sonos One, but there is no Sonos 1.