Metric-Imperial Converter Not passing FCC test

My program will not pass the FCC test. It passes all the internal tests and the site works as expected, but it won’t pass. Additionally, after the FCC tests are performed my site becomes unresponsive.

However, upon searching it looks like there are others who’ve had this issue, and only 2 to 5 months ago as well. My question is, does anyone know if this test is past production?

Your code so far

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36.

Challenge: Metric-Imperial Converter

Link to the challenge:

Could you write which tests don’t pass exaclty?