Create FAQ.MD

FAQ.MD

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+## Frequently asked questions
+
+
+### I'm unable to log in, what do I do?
+Login errors such as `Challenge required` are usually caused by one of the following:
+
+- You have entered invalid account credentials.
+- You are using PyInstaLive from a different location/IP address compared to where you are usually logged in. (This includes things like your phone's 4G network vs your home's internet connection)
+- Your IP address or account has been flagged as spam or suspicious.
+
+The reasons above are things I have no control over, so there's no direct way for me to solve your problem. You can try checking out the URL which you can find in the response text you'll be able to see when such errors occur:
+```
+(Code: 400, Response: {"message": "challenge_required", "challenge": {"url": "https://i.instagram.com/challenge/XXXXX/XXXX/", "api_path": "/challenge/XXXXX/XXXXXX/", "lock": true, "logout": false, "native_flow": true}, "status": "fail", "error_type": "checkpoint_challenge_required"})
+```
+
+If that doesn't help you out either I recommend creating a new temporary Instagram account (on the device and internet connection you will be using PyInstaLive with) and use that instead.
+
+
+### How do I record multiple users at the same time?
+
+#### Windows
+
+Example script:
+
+```batch
+cd C:\PyInstaLive
+:loop
+pyinstalive -u "username" -p "password" -r "live-username"
+timeout 10 > nul
+goto loop
+```
+Make a new text file and copy the above contents. Make sure to save as a .bat file.
+
+Make sure there is a configuration file called pyinstalive.ini in the directory you want to run PyInstaLive from. (Use `cd` to navigate to that directory if you put this script in a different location.)
+
+#### Linux / MacOS (not tested)
+
+```shell
+while true
+do
+    cd /home/default/PyInstaLive/
+    pyinstalive -u "username" -p "password" -r "live-username"
+    sleep 10
+done
+```
+Make a new text file and copy the above contents. Make sure to save as a .sh file.
+You must make the script executable with `chmod +x <filename>`. Use Google.
+
+Make sure there is a configuration file called pyinstalive.ini in the directory you want to run PyInstaLive from. (Use `cd` to navigate to that directory if you put this script in a different location.)