Hi,
I've installed electrum together with EPS and the Trezor HW wallet.
When I click receive it gives me an address that was already used before I've started to use Electrum.
When I look in the addresses tab, I see that the first 8 address are already used and spent.
How can I skip these 8 addressed and get the first really unused address from Electrum?
That shouldn't be happening. The receive tab only hands out unused addresses. Perhaps electrum wasn't synced when you first switched to that tab? Try restarting electrum. Make sure it's synced and then switch to the receive tab.