Thanks for posting and recommending Blokada to your friends, Blokada 5 will still be maintained and it is not abandoned but it will have no new features in the future like Blokada 6. Also, it is free and will always remain free.
Blokada 6 is a more stable version and comes with a free trial of 7 days to test it out.
Here’s a quick guide I shared about the differences between Blokada 5 & 6: