I don't remember getting "seed words" when installen Electrum 3.0.3. When I opened Electrum 3.0.3 I used a password. That's all.
By history you post it is clear that you sold bitcoin from MultiBit and that you then start using Electrum. But how you create that 3.0.3 Electrum wallet? If wallet is created as Standard wallet you should get 12 seed words, and if you import private keys (maybe from MultiBit) then only way for wallet recovery is with that private keys.
It makes no sense that you only use pasword, you set that password when you create Electrum 3.0.3 or? Key question here is how you create Electrum wallet since you do not remember seed words, this is most important step when creating wallet.
Dear all,
I have found my wallet. Been looking for hours today. Found the file on my NAS. The NAS is not open from the internet, but still, never thought I would have placed my wallet on the NAS. Feeling a bit stupid.
Thanks for all the suggestions. Without I would have stopped looking much sooner. So glad I finaly found my wallet.
Thanks again!