Contact
BeatBuddies is built and run by one person in India. Every email is read and answered by the person who wrote the code.
Tell us the phone, the browser, and what happened. A screenshot of the Sync & settings numbers helps a lot.
Email from the address you signed up with, subject Delete my account. It is done within 7 days and you get a confirmation.
Open Sync & settings on that phone and drag the nudge slider. Every phone takes a different amount of time to push sound out of its speaker, and a bluetooth speaker adds a lot more. The clock cannot see that, so the slider is the fix.
Turn on "Force sound on iPhone" in Sync & settings. It plays through the music channel, which ignores the silent switch on the side of the phone.
Tap the retry button on the track. If it keeps failing, the track may be longer than the 15 minute limit or larger than 40 MB, both of which are refused on purpose because a phone has to hold the whole thing in memory.
Turn on Low data mode on the start screen. It fetches one song ahead instead of three, and the sync is exactly the same.