This is ruining the gameplay for everybody.

Players have controlled several tribes at once, destroying the balance of the game. This should be fixed.

People can build outside of the map so they have huge castles with invisible walls. so they keep staying forever.

When a disconection is detected, the server should handle the reconections within x seconds or minutes in order the player to not have to restart his tribe from scratch. Could be done through account, session timeout handling, cookies, or whatever.

my score is 418 points and I'm nothing pro and do not play very well

Currently, the only way to disband a villager and remove them from your tribe is either to use the Stay command (which you have to hope you researched when you need it) or by hurling yourself at enemies and hoping the critical villagers survive while the superfluous ones perish.

Having an option to say "Hey, you're useless, go die" and permanently lose that villager (I.e. they don't drop any loot, they don't go defend a meadow, they just are gone" would immensely improve the strategic nature of the game, especially as the needs of a Tribe and Team evolve over time.