be careful !
i sent 0.003 btc to olymptrade at 31.07.2019 but my account never funded !
i talked with support team , they just said wait 24 hours
the day after they said the same.
finaly after 3 days they said "sorry, we don't have it"
but i have all proves which shows they recieved it and has been removed :

http://prntscr.com/oo347g
http://prntscr.com/oo34io

and this one shows they removed it again :
http://prntscr.com/oo35en