Hello,
BTCL's simple mistake, bug, problems can let your website hack/down. Be careful with .BD domain. I found their mistake and made access to domain account. I also accessed to google.com.bd and bypassed the OTP. These mistakes can harm google and others .bd domain holders.

First, I made call to BTCL and explained the problem. They listened to me and called many times to solve it out. Finally, solved out and thanked me. Chapter closed.

But, their are still security issues i found. Google should discus and help btcl for this issue.
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SO, please Change the password of your account and contact BTCL for further help. And be aware of security of your domain & website. Hope, solving those problem will create a better tomorrow.

( NOTE: I change the password of google.com.bd domain. So, change the password as soon as possible)

Sincerely,
Sayzar Rahman
fb.me/AKASH.feedback
+8801746693355