Hey there @forcedaccount11,
thanks for posting in the community !
Please make sure that your speaker is up to speed on the latest firmware updates.
In addition, please make sure you're using the right steps on this Spotify Connect help page.
However there are similar issues with the Harmon Kardon speakers on a few threads provding solutions and options i believe you should check out (1.2,3)
Let me know if this helps 😃