Zerodha — KITE API Token Problems

Hi,
While I pay an assured amount of 2000 Rs / month to get an API call, it is hardly 8-10 days in a month that I am able to connect due to your server load.
But then, if I pay the assured amount, you need to provide me an assured token/connection for my app.
Here is the stack trace that I continuously get at the peak hours of trading, when I need it most.

Kindly resolve this matter asap. My credentials are
khurana.[protected]@gmail.com
And Zerodha login is IX3802

aceback (most recent call last):
File "connect.py", line 63, in
data = kite.generate_session(request_token, api_secret=key_secret[1])
File "C:\Users\Varun Jain\miniconda3\envs\algo\lib\site-packages\kiteconnect\connect.py", line 255, in generate_session
"checksum": checksum
File "C:\Users\Varun Jain\miniconda3\envs\algo\lib\site-packages\kiteconnect\connect.py", line 826, in _post
return self._request(route, "POST", url_args=url_args, params=params, is_json=is_json)
File "C:\Users\Varun Jain\miniconda3\envs\algo\lib\site-packages\kiteconnect\connect.py", line 894, in _request
raise exp(data["message"], code=r.status_code)
kiteconnect.exceptions.TokenException: Token is invalid or has expired.