Poor customer treatment.
I had a similar issue last week. I had ordered goods on condition they would arrive on Monday. The vendor accepted this and assured me the delivery day would be Monday.
UPS were the couriers. The package shipped to Southampton (near me) over the weekend. After that tracking just said 'out for delivery'. I stayed in all Monday and at 17.20 this tracking message changed to 'reschedule & deliver following day'.
I called the shop and they seemed angrier than I was. I had to work the following day. I suggested the package was returned to the shop & sent out again the following Monday. The shop agreed.
Next day I tried to contact UPS but didnt have all the (seller) information needed, so the shop had to take this over. So back & forth was all this e-traffic between me, the shop & UPS.
At 14.20 Tuesday I get an e-mail from UPS that 'Your package has been delivered'. Now, a signature is supposed to be required on receipt. No one is there. SO it has either been delivered to a similar address (there is one a couple of miles away) or left unattended at my door. I report this to the shop who are now kakking themselves because the value of the item is quite high. When I reach home, there it is in my porch.
UPS are at fault, but it seems today that all carriers are overstretched & cutting corners. I've had a couple of similar experiences last year, where it has only been a matter of luck that I got my deliveries at all.
An unscrupulous person, in my place, could easily have claimed that the package was missing; presumed stolen from the premises and claimed recompense.
Mike. I hope you get your computer soon. I hope it works and that you finally get your Linnstrument fully functional.
Good Luck.