Problems with LogMeIn Client

I have two problems. Firstly, when I am remotely accessing a computer, I can not type anything on my computer. Anything I try to type on my computer, even though the remote session is minimized, typing goes out on the remote computer and not on my computer. When I try to connect to another computer remotely, I can not because I can not enter the access credentials (user and password or code of the LogMeIn computer). I noticed that on some remote computers, the problem occurs when I maximize the LogMeIn Client window or when I type something on the remote computer. The problem only resolves when I close all sessions and close the LogMeIn Client, so I can re-enter it on my computer. Remembering that I have already uninstalled and reinstalled the LogMeIn Client and the problem occurs not only on my computer but on other computers in my company as well. Another problem: on some computers that access remotely, when running some application that requires user account control (Windows UAC), the mouse and remote keyboard stop working, I can no longer play on the remote computer. The problem is only resolved after the user clicks access credentials (when the computer requires administrative credentials) or click OK. Just like in the first case, this also occurs on more than one computer in my company (actually, in all of them). This is delaying our tasks, hampering our productivity too much. Please, I need a solution to these problems. Thank you.