Are more people having trouble to claim there tokens?
Farl, I've had zero problems claiming with BTC and FIMK.
I've heard that some investors had problems with ethereum, but those could get fixed.
I guess, contacting the heat support is your best option.
For ethereum, try using only lower case letters in your address.
It has worked for several people here so far.
If you sent through contracts, I dont know if it will work and you might have to contact support.
Which currency are you trying to claim with?