Ipset - created a table with ip. How can I clear it now?

Question

linux

a couple of questions arose on iptables and ipset:
1) created a whitelist of several thousand ip, this ip list must be updated every day from sources. How can I clear/remove the whitelist?
2) I try to do this in order to let these same ip from the list on the server, I do this

#разрешаем ip из списка
sudo iptables -A INPUT -m set --match-set whitelist src -j ACCEPT
#остальных блокируем
sudo iptables -A INPUT -j DROP

but for some reason all ip are blocked, including those who are on the list. how to do it right?
Or should I just remove it?
sudo iptables -A INPUT -j DROP

Answer 1

1) ipset flush [ SETNAME ]
2) are these all the rules? higher no more?