As far as I know All Day Chemist is not a part of this investigation. I do not think they are a manufacturer of prescription drugs. The major target is Ranbaxy Labratories Inc. Ranbaxy is a huge manufacturer of many drugs such as generic Zocor that we buy here in the USA. The issue appears to be somewhat political and should soon have a solution.
It is possible that mail order pharmacies such as All Day Chemist have been caught up in the investigation. As you should know, it is technically not legal to purchase mail order Rx drugs from India or Canada or Mexico. We have been forced to by our own governments unfortunate stance regarding Rx drugs.
Your shipment might have been stopped to check for products from Ranbaxy, or as often occurs it is just being spot checked by US customs. If customs confiscates your order All Day will likely send you a new one.