I tried sending to cryptopia and I too canot see my deposit in my account.
So I would suggest to wait for anyone to send coins over to cryptopia.
I've opened a ticket with them earlier today but we know that with them it can take some time.
So to be safe, for the time being, wait before sending more coins over there.
If you want to make sure you are on the correct chain and synchronized properly. here's the latest checkpoint hash
{
"synccheckpoint" : "b4ba637b5de971c4c82e52a4e6ab1f836dc55936acca785633cda642e6117fd6",
"height" : 2494562,
"timestamp" : "2018-04-08 06:39:44 UTC",
"policy" : "strict"
}
if you don't have the same block hash as this synccheckpoint, then you are not on the current main chain.
you can check your current wallet status by going to the console and typing
getblockhash 2494562
if the answer is the same hash as above (b4ba637b5de971c4c82e52a4e6ab1f836dc55936acca785633cda642e6117fd6), you are fine.
If not, you might need to reindex your blkindex.dat file
this is done by deleting and starting the wallet with the
-reindex
flag. on linux it's done by using
growthcoind -reindexPLEASE NOTE THAT THIS WILL TAKE A FEW DAYS TO COMPLETE, depending on your hardware.