Would you mind trying the following? 
Blokada v5 for Android: Community Beta
Hi Pal
Thanks for the opportunity to try this. Got it on my W6 now Will add to my Honor View 10 2nite.
Loving the new interface…Installed just before lunch. all optimizations disabled. No battery saving settings enable at all and so far…flawless.
I’ll keep you posted
SimonC
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Hi you could also try adding the activator switch widget in your notification panel? Maybe it’ll help you out keeping the app alive because world for me 
Thanks pal, but got the Beta installed now…so far flawless 