that is RO client. what it needs is the client .EXE with that date which is 20220602 and above. And for sure you need higher RO client too to support that EXE.
Note: The new skills of Dragon Knight (Dragonic Breath), Biolo (Explosive Powder, Mayhemic Thorns), Meister (Mighty Smash, Spark Blaster, Triple Laser) need a client 20220602+.
u said u are using 20180620 client.
So make sure packets.hpp clientdate are correct.
and you type above '20180530' which isnt the same as it should be.
If you already change clientdate in packets.hpp,
./configure only shouldnt give any issue.
if (countitem(512) > 5) {bonus bAllStats,1;}
Something like this, but most probably it wont be updated then the item is consumed/trade ASAP. take effect when itemdb is reloaded or character is relogged.
is this latest rathena ?
Check Trade Override at itemdb , set the GM level there.
# Trade: Trade restrictions. (Default: null)
# Override Group level to override these conditions. (Default: 100)
# NoDrop If the item can not be dropped. (Default: false)
# NoTrade If the item can not be traded. (Default: false)
# TradePartner If the item can not be traded to the player's partner. (Default: false)
# NoSell If the item can not be sold. (Default: false)
# NoCart If the item can not be put in a cart. (Default: false)
# NoStorage If the item can not be put in a storage. (Default: false)
# NoGuildStorage If the item can not be put in a guild storage. (Default: false)
# NoMail If the item can not be put in a mail. (Default: false)
# NoAuction If the item can not be put in an auction. (Default: false)
https://github.com/rathena/rathena/issues/2533 if you use rathena later than 5 August, shouldnt have problem
#define MAX_STORAGE 600 ///Max number of storage slots a player can have
#define MAX_GUILD_STORAGE 600 ///Max number of storage slots a guild
in src/common/mmo.hpp (https://github.com/rathena/rathena/blob/master/src/common/mmo.hpp)
Didnt suggest for you to increase here, better use premium storage as another additional storage, maybe.
https://github.com/rathena/rathena/blob/master/db/instance_db.yml
Read the instance settings, and maybe check some example for example ET from pre-re or renewal folder.