News on network congestion post covid-19 - Read here
To start with try accessing the site on - www.labsmart.app
If you are still unable to connect normally, you should try accessing the site over VPN. Use the following steps:
Once VPN is turned on you should be able to access the site normally. First page load might be slow. Screenshot shown below:
The error will only occur when you are trying to submit a form.
This error is most likely caused by your web browser or it's extension. Try changing your web browser or disable all the extensions.