When I turn on scale, it automatically says 8

When I turn on my scale it registers 8, if I hit tare it says 8. Also on left side of screen it has a kind of downward arrow and below a M.

I've changed the batteries, no help.

Thanks!

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2947414:01crwdne2947414:0:

What happens if you put something on the scale. Does the number change?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0