Game has already another installation going on.

First of all sorry for my english since im not native.

So, i downloaded the 7 parts and the installation of Arcadia, paradise, and after putting them together in 1 folder (without decompression) i launched the installation.exe, and it started working. Waited a little bit but it was stuck searching for "upcoming something". So i decided to stop the installation and extract all the files in another folder, putting there the exe and launching it, BUT!. Now it says that there is another installation going on and i have to wait until its completed. I only had this open and i deleted the last folder the 1rst installation did.
Also i tried deleting all the decompresed files in the folder, so i only get the .rar ones in the other. Tried to launch the exe and happened exactly the same.

What should i do?.
Any guide on how i should install it? Couldn't find anything like that.

Yep! i restarted it!. Now after some tries somehow i got the launcher pop in my desk, tried to launch it but it failed obv, i didnt patched it, but then when i was patching i needed the "patch_10.0.4.2001.en_10.0.4.2002.en.exe" since i wasnt unable to download it because of some error, and virus pop up, i "disconected" the antivirus and tried some microsoft settings, now going to restart to see if i can download it.
If i can and i can play ill close this thread by myself. Thanks for the answer tho!

Managed to do all the patches, launched the game and this appears "atachment" or
https://gyazo.com/63d52329b1994452d90ce4352044e171

Prob its a lot more easier than what im feeling but dang im confused.