'firebase remote config. fetching failure: http code 403 unity

I started getting 403 errors when initializing remote config in my application. Everything was working fine until a while ago. I connected google play services and set up oauth for them and from about that time, remote config stopped working. The google play games authorization is working fine. I have no idea what or where I need to check to get remote config working again. This has been going on for a week now. I haven't found any questions like this on the internet, it's like no one has dealt with this.

Error: enter image description here

Code section where an error occurs (everything works correctly up to line 47): enter image description here



Solution 1:[1]

If your building a mobile game, then I would recommend using ByteBrew for your remote configs. They deliver configs sub-second (I think my average configs deliver in ~100ms). They also have a dashboard to add and edit configs, as well the ability to create revolving configs based on time intervals, and they are free.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Ethrodom