Joe my friend youve sprung a leak or your coins are moving.....most likely you are losing water.
the picture of the quarter is unacceptable. IMO id be worried and try again.
thats a large drop , as well i cannot verify your evaporation container pics
did you clean your drain flange well and use noble sealant on that connection and then snug down clamp ring?
youve either punctured your flex flash membrane, made a poor drain flange connection , or your test plug is not functioning.
if your plug is down below the drain riser to 2" weld connection you could also be leaking there, is your 2" riser pipe new and clean? perhaps something is stopping test plug from expanding properly ??old cruddy pipe?
drain it and drop your plug as deep as you can and fill up only the drain just below your noble flex flashing connection & see if you lose water from below there.
after that i would use an oatey rubber tension plug at top of drain and retest again the flex flashing.
you need to keep troubleshooting ..........
if you were dilligent with your methods of installation, and didnt puncture your flashing and ts and followed directions from noble you can hold on to hope that its a drain leak... which would be horrible and require tearing it out .
leaks or a puncture in your TS can be patched. a bad drain connecion not so simple....
keep trying...... no it is not easy, you have tackled a difficult DIY build.