stopped working about a month ago

[deepvision7]

I was using the login with cookies (manual cookie method) with a proxy and it had been working fine up until about a month ago, when it started giving the Syntax Error.
At first I got a new cookie from instagram and used it in the app, but it didn't help.
So I thought maybe it was due to IP which I also changed to a new IP. Didn't help either (
It either results with Please login with instagram credentials or Syntax Error now.

Is there anything I can try?

When taking a new cookie from Instagram I noticed that it was asking some new question with a popup, which I had to bypass. Can't remember what it was exactly.

[sermagnus]

Recently, I have also encountered the Syntax Error issue.
After debugging the code, it appears that the login functionality is working correctly.
The problem seems to lie in the response JSONs, which might contain invisible or UTF-8 characters that trigger the syntax error.