Staking Buckets Unlocked

Staking bucket got unlocked by itself. Is there a problem with the stacking service?

I use IoPay V2.0.9 in my Samsung tablet.

About a month ago, I created staking Buckets with durations of 91 days and 31 days, and I locked them.

After a week, all the Buckets gor unlocked by themselves (all the locks were turned off); I didn’t initiate that action, it happens on its own.

I complained about it and someone from the support team, told me to let it be. I did, and now some of the Buckets are ready for withdrawal.

Here is my previous complain:

Can you help?