Ok, so please correct me if any of the following statements are wrong.

When you restore your seed, you generate addresses beginning with 3.
The balance at the bottom of your Electrum wallet shows zero.
When you click on the "Addresses" tab, you see a list of addresses all beginning with 3, but all with zero balance and zero transactions.
When you copy the top address from the "Addresses" tab in to blockchair.com, you see one incoming transaction and it displays a balance.
You have a green circle at the bottom right of Electrum.

If you are willing, can you share a screenshot of your Electrum open at the addresses tab? Or even PM it to me directly if you don't want to share it publicly. It might help us figure out what is going on here.