wierd @amazonuk #associates bug for @morrisons washing powder

wierd @amazonuk #associates bug for @morrisons washingpowder

clicking on the amazon associate link generator link for amazon morrisons washing powder 650g works fine https://amzn.to/2YulXO8

but when i clicked on the generator for amazon morrisons washing powder 2600g i get the message

this product is one of the Amazon Associates Program Excluded Products. We do not support direct linking to this product. Please direct customers to another product or the category for this product instead.

WIERD !