FAQ 16 also talks about paid time being 'non-transferrable and non-refundable'. I wonder whether this phrase should also link to FAQ 220.
Also, 'transfer(r)able' should be spelled the same way in both places. (Whether to keep it as 'non-transferable and non-refundable' in 16 or to change it to 'neither transferable nor refundable' as in 21 and 220 is up to you.)