Realy soon it is when?:)MT have a new board out really soon, the 100 series it will be cheaper than the 500.
If you stick with MT for AP and CPE then you can have some neat things going on like NStream - Polling (avoids hidden nodes) and you could build a Mesh too!
Of course:)Do you have routerboard packages installed?
already wrote, but as it was short after midnight Latvian time, then stillo only ticket confirmation.You should write to support. The forum only provide community support.