It would also make sense if someone created a bot and took advantage of this situation for profit. Because the last few days from morning to evening I was waiting for 100 entries on viabtc, but strangely I didn't see a single entry that I could use. Even though at that time I always checked every hour. But in the end I still didn't get 1 accelerator quota.

There are several possibilities for all this to happen. The first possibility is that viabtc has stopped the service temporarily. The second possibility is that there are people who create bots and use up the accelerator quota.