You can use the wallet neotracker.io to participate in the ICO ( just no access to a computer at the beginning of ICO)Thanks
Is this officially? My sync is stuck even with bootstrapping chain file

Can't do anything
No question I just asked there is no access to a computer at the time the ICO I got response from the Manager in slack :"no, neotracker wallet won't work "
Good news is that Neon wallet has been updates in time and can be used for the ICO.
If I send 1 NEO, I pay 0.001 gas. If I send 50 NEO I still pay 0.001 gas?
Yes.
"Good news is that Neon wallet has been updates in time and can be used for the ICO."
This is surely incorrect as the email from RPX, sent out this morning, says, and I quote..
"Note that the NEON wallet and Neotracker wallets cannot be used to participate in the RPX sale."
EDIT:
My bad, just looked at the gitub entry for NEON and it says it has been updated for use in the RPX ICO.
It may be too late now for anyone to update to the new NEON wallet - a little over 1 hour to go.