What is wrong lol?
Short answer: Nothing.
Long answer:
As NeuroticFish has mentioned, electrum generates a new receiving address for you each time the previous one has received a transaction.
This is done for privacy reasons.
A wallet (in your case: electrum) is a software which manages your private-/public- keypairs.
It can create an 'unlimited' amount of addresses for you. It is - for privacy reasons - recommended to use a new address for each transaction.
When spending coins, electrum will simply take the unspent transaction outputs from multiple addresses of you and combine them.
An address is not an identifier of your wallet. Your wallet manages your addresses. So you don't have to worry at all.
