Estimates are almost never right and depending on the coin you are staking; the estimate doesn’t auto update. Try exiting and reloading the program and see if the estimate updates. Also, depending on how many coins you have, the stake could take over a week if not longer.
but in that currency no one is receiving the reward. and the POS is not creating new blocks 4 days ago
block explorer:
http://45.77.127.147:3001