Then why does it says the address will br expired?
It's an expiration date of an "invoice" and not your address.
I see, I didn't think from that view, nor I used any address from this wallet due to the confusion.
You can just turn off the expiration date next to the trashcan if you don't want to expire your receiving address.
Got it now, I thought it was expiration clock only. Since LN is implemented, I was a bit worried although the address itself was enough to be sure that it has ni connection with LN. I have my seed backed up and most importantly, this is just a throw away wallet I have created to check out the latest update on Electrum.
Thank you guys.