Jesus's message to the church of Thyatira was simple: you are doing all the right things, but you need to get rid of the false teacher in your midst. Learn how not to fall into the trap of doing good works, but believing wrong doctrine.
When the Lord evaluates His churches, He notices both the good and the bad. To the church at Ephesus, He noticed all their work in ministry. But He also noticed they had lost their first love. Have you lost your first love?