Yes reload is there too.
The icon you posted is for refresh (check for new). Reload, starts from the beginning and reloads / re-imports everything.
-Dave
There is just one button (call it refresh or reload).
But there is no button which re-imports everything (why should it, this doesn't make sense).
You just need one button, to 'refresh' (i.e. check for new transactions related to the addresses inside of the wallet).
@OP
This seems to be a connection issue.
Do you connect via TOR or VPN ? If so, try without.
Sometimes (but rarely) mycelium server are kind of busy, delaying the appearance of new transaction for a few days.