I downloaded armoury 0.96 and it worked fine.
Do you also have Bitcoin Core downloaded, installed and fully synced? Armory relies on Bitcoin Core block data to be able to build it's own internal databses. If you do not have Bitcoin Core (0.19) installed and synced, your Armory will not work correctly. You won't be able to see transactions and updated balances... and you won't be able to send coins.
Also, what OS are you running on? I find it strange that you are not able to install 0.96.5... but I can tell you that your current version of Armory, 0.96, will
not work correctly with the latest Bitcoin Core etc.
You need Bitcoin Core 0.19 and Armory 0.96.5 to have any hope of getting it all working properly.