
I did this offer for Call of Antia through the aYet Studios offer wall.
Unfortunately, they did not credit me the correct amount. I only received 50% of the advertised rewards. I sent in a ticket, and they said to wait 7 days to see if it was credited.
I emailed back that they were misunderstanding me and that I had already been credited, but that it was the wrong amount. No response.

7 days later, I replied to the ticket message that I was still without the credit. No response. I checked the offer wall, and the game wasn’t listed under my pending offers. 10 Days later, I replied again to the ticket. No contact.

The offer requires that you purchase a “Battle Pass” for $9.99. I ended up barely breaking even on this offer after the purchase.
I now see that they have another Call of Antia offer up for 21,250 SB, and that you need to collect 8 of the 5-star heroes. This is quite impossible without spending hundreds of dollars.
You can buy 1 5-Star hero for $99, and you get a 5-Star for every 85 Sacred summons using Orange Summon Stones valued at $1 each.
Unless you get lucky on your summons, you are looking at close to $700 spent to complete this version. And aYet Studios may not credit you the correct amount.

I would definitely advise against doing this offer through the aYet Studios offer wall, if at all.