Delton keyboard acts as if Ctrl key is pressed

As soon as I plug in the dongle of the Bluetooth Delton keyboard KB200 into the docking station, my computer acts as if the Ctrl key is pressed and does not type anything. I verify it by pressing the Esc button alone which opens the start menu in addition to other keys in Firefox such as pressing T that opens a new tab s that opens the Save As dialogue box. How to resolve this issue? I had another docking station that this keyboard worked fine when the dongle was plugged into one of its USB slots; although it showed similar problems when plugged into other USB slots. When I go to Delton's webs

Question by Ehsan Mohandesi on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.