I'm having the same issue. Vice Admiral 1 and just got to this episode. Was enjoying it but it won't count me destroying the astroid debris, 1/3. I've abandoned it, started over, but Destory Astraoid Rubble remains at (0/3) when all three are destoried and the blinky yellow thing is totally unabstructed on the surface of the larger astroid.
What's the deal?
Just got a reply to my ticket, "Thank you for contacting customer support. We are pleased to let you know that your issue has been addressed. It should be incorporated into one of our future patches. We appreciate your feedback and thank you for playing!"
So, guess we're just screwed until they fix this in a patch in the future. Episodes are the only thing to keep me playing and they're fudged up a lot... very sad. Good for me I have a lifetime subscription. Four others who started playing with me left within the the first two months due to lack of content. . .
Just glad I don't have to pay more to come back later.