It is a website visited by thousands of people all the time.
Even the largest websites in the world suffer moments of instability, when they experience a significant increase in hits.

It will always be impossible to guarantee 100% uptime. Perhaps we have felt this more in recent times, because it has appeared more frequently.

However, @theymos has already announced that it is preparing improvements, which should come into force at the beginning of next year. Therefore, it is important to have patience and understanding when this occurs.