Unknown file size download problem/Some sites download problem (BANGLADESH) Please fix this problem

(BANGLADESHI users still can't download any unknown file size/Some sites. I using GRAMEENPHONE INTERNET Heavy INTERNET Package with latest OPERA MINI Android version. I using EXTREME MODE it's suitable. 2 MONTHS gone but you guys OPERA MINI TEAM can't fixed our download problem. Now i am hopeless nothing to say you guys are too lazy. Please take it seriously its request. We BANGLADESHI people already informed our download problem. Simple download link https://userscloud.com/jzu0q5om7c4x This problem started (10/08/2015) may be OPERA MINI TEAM update their server. Pleae fix unknown file size download problem/Some sites download problem. Please do the needful asap...........