I had the same problem with a £60 voucher for Tab S8 Ultra. I was never able to use it but customer services said it was valid. If I waited to place order I would have lost the free keyboard cover (that I am still waiting for) and the extra trade in discount.
I had a £100 voucher but decided against buying as I don't think I should be paying £1300 for a HD 60Hz screen even if it does have the latest Intel processor.
