I have 3 x Acer AL2216W on TH2Go and they do not work at 5040x1050.... properly. I have tried everything. I have been able to run them at 5040x1050 but the No.3 monitor is somewhat fuzzy - No.1 & 2 are perfect. It is really odd.
If you can sell them and get some other monitors that work, you will save yourself a lot of grief!!!
The widescreengamingforum has a list of known working and problem monitors with the TH2Go http://www.widescreengamingforum.com/