do you publish new updates every couple of hours or so? Because BTT opens up the update dialoge the 4th time today - and I installed the new version 5 this morning already. After booting my mac, BTT opens that request again and again.
There were a few bugfixes, however the update check interval should be more like 48 hours (unless BTT is restarted, then it might check earlier). Do you have alpha updates enabled?
No that's not the reason (might look like it though). The issue is the wrong build number is sometimes included in the app but the correct one in the update feed.