I posted in your previous post before I saw that you had started this in a new section.
Having read what you have put above, it seems that BRIANHAYES10 has a fixed lease allocated but that it is showing up in the dynamic leases section. I have not seen that happen.
Just as a check, can you confirm that all of your fixed leases do not overlap into the dynamic range that you have set. The fixed and dynamic sets of ip addresses must always be separate sets. That is something that IPFire does not currently check for and flag up but has been registered in the IPFire bugzilla.
If your dynamic and fixed ip addresses are completely separate sets then I don’t understand what could be driving the effects that you are seeing.