Timestamp Microservice Passing and failing tasks randomly

Hi ,
I have built this app (https://sudden-protective-date.glitch.me)
Testing by hand all the tasks pass, but when I try to submit it through FCC all of them randomly fail and pass with every single submission. Sometimes none of them, sometimes all but one and everything in between. Does anyone know how to fix this issue? Is this a problem with FCC or Glitch?

Edit: I can see that Glitch servers are busy. Can this be the reason?