Hi can anyone help ?

I just downloaded these this morning and wallet seems to be syncing still.
How do I know when sync is complete?

I transfered some xrb from Bitgrail to my local wallet and want to see if I received them.
The raiblock explorer is not showing any information about the transaction.
I could see the current block on raiblocks.net yesterday but can't anymore.

I want to add my wallet seed back into my local wallet but waiting for sync to complete.

ty