SWAP, ok listen: All you have to do is deposit ALL you THC to Bittrex by the 19th, then Bittrex will suspend trading for THC. THEN Bittrex will do a 1:1 swap to the new token for each address. THEN if you want them off bittrex download the new wallet and withdraw them. Simple as that.

Don't panic!!!

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Unless the chain has been reset, then you don't need to download the whole chain.
in essence, there will be two coins but the former will be destroyed so to say.
It is a completely new wallet, not compatible with the former one.

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All the best.

there arent free coin, its just an automatic swap
i guess coinomi wallet will support