Greyed out tabs, "Fly" button does nothing

whenever i load in to msfs, and get to the main menu bit, the “MCAS MIRAMAR” tab is greyed out,


and when i try to click fly on the world map nothing happens…!

image below

also when i try to select an aircraft the selection box is blank, image below:

also in this image below, there is ui bugs at the top, 2 world map tabs overlapping each other.

Any help on this??

this bug is game breaking…

ive not played msfs for weeks now because of this bug,

i have searched around, and people have said that they found a solution, but that sololution only works for some people, it doesnt work for me.