Chances are good you were taken by the logmeinrescue "technician" who wanted access to your computer. You may well have malware now. Do not pay them money. Do not allow further access by them.
First, make sure that Windows defender is active and have it run a check. It acts as a firewall.
If it spots problems it cannot cure, I suggest posting a new question in the Q&A website with a Windows and Defender tags. This forum that we are in is about Word, not about Defender.
As to Word, John has given you good directions for installation of the desktop applications, which is what you want.