I would to apologise for my previous reply. However, after reading @PrintableCharacter reply, I checked that it’s Huawei AppGallery that automatically updates every version of Blokada less then 5 to v.5.1.0, because this is the last one present into the store! Infact, I have no update from 5.1.0 to 5.3.0, because that version is not present into the store.
For the moment, I’ll stay with v.5.1.0 that blocks all ads (despite without the toggle into status bar, I have to lauch it manually every time), hoping that version 5.4.0 will work good again.