The Chosen Ones

Finally killed the Yurgimar on Hard - epic fight, costed 30-35 lifes.
But again the Ogozoma was not actually upgraded 
The message appeared that I got the Super Ogozoma (but still in the inventory boxes there was just an Ogozoma, not upgraded).

Ch.10 - bug occured with that Bug boss fight - if he casts his "green screen" spell and will be killed during the casting time - the "green screen" won't be finished - I've been waiting for about a 5-7 minutes - nothing changed. Have to reload the game.
Can you please tell me how the decision with the Angel affects on the game?
Epic fight with the Angel gave one of the greatest item in the campaign in my opinion (the one that gives +6K hp, +50 stats etc).
Got some questions - how to enter to the Mother's lair? I was able only with the blink orb obtained from the library - but only one hero can do it. I've tried every cave, but can't find how to solve it
Also the quest with popag - after killing the bug boss I have to be "sure that popag will return to the base" - I've found him near the cave on the north west and he teleported away - I was neither able to find him on the map nor on the base. Where was he and how many times I have to find him?

Xvareon fight - during the first stage if I kill the shadow egg too fast - fatal error occured. But tried it only once.