Stuck inside isolation mode

[Thomas22461076owwn]

I've looked at multiple answers through the Adobe Support Community, online and etc. and nothing has worked for me so far. I was wondering if anyone could take a look at my file and fix it for me? I'm not entirely sure what has happened to it. I accidentally isolated a layer, turning the entire piece very tinted white, and since then I can't get back. 

I'm having issues uploading the file through this website for some reason, so here's a link to it through Google Drive: https://drive.google.com/file/d/1MJSKHVs2tNfqTHcN-eCEiR3d3pO0-Kyl/view?usp=sharing

[tromboniator]

You have applied 50% opacity to this layer. Go to the Appearance panel to adjust. I have not delved any deeper to see if anything else might be going on.

Peter

[Jacob Bugge]

Hi Peter, I hope you and yours have a very nice time when 2022 catches up with yous.

[tromboniator]

Thank you, Jacob, and the same to you. After a week or more of +C , we've had an overnight replenishment of about 504pt of 0% K (not Kelvin).

[Jacob Bugge]

You have the right stuff, Peter. We have +C and some rather evasive pt of 0% Opacity.

[Thomas22461076owwn]

I see, thank you. Do you have any idea why there's a bunch of layers now created and duplicated in my Layers window?