Can anyone tell me what it means when inventory becomes unfulfillable after being active?

I had 5 units active last night, but this morning they're all out of stock and listed as unfulfillable.

I'm going to contact seller support but have very little hope they will be of much use to me sadly have not had very good support with them so far.

Has anyone had experience of this?

Everything else in this shipment appears to have gone safely and 5 other very similar packaged units which were packed right next to them are still active so I don't expect they have been damaged.

TIA

T

what does this mean?

If the SEA is missed because of the carrier, we request you to kindly escalate this issue to your carrier via email asking with below full details & share us the carrier response as a screenshot attachment.

a) Date and time

b) No.of Units missed

c) Reason for the miss

d) Precautions taken

What is a HAZMAT RETURN please anybody. I have a return order request its been on my page 2 weeks now. I have not got the items back despite requesting it and a tracking number from the purchaser. This is nearly £200 worth of goods and I cannot afford to loose it. There is no communication from the purchaser. So what is it and what do I do about it if anyone can advise me. Thanks