In addition to that tip, after discovering half of your te's are not tradeable. Abandon this forum and start maxing out your 4*s and sell them for 7 TE each. You can also go halfway and sell them for 3 TE each. Its your call. But other than that, there is nothing else you can do for now. Gather up at least 15 to 30 te and buy yourself a fresh 5* such as a Patricia, Julia or a Sliepnir Unit. Avoid Thrain, Fiona, and Emma as they are weaker than the strongest 4*s.