I explained that I could only provide limited assistance. If you know more about seed compatibility issues then it’s good that you came here to impart your additional knowledge on the subject. It is worth remembering that different people have different experience levels, especially with cryptos.
Hi @a-o, its appears that you might need to do some searches re electrum seed compatibility. It appears that Electrum has not always adhered to (bitcoin improvement proposal) BIP39. You may not have any other option but to control your keys temporarily with Electrum. You might only need to control those keys in Electrum for an instant because you can send the funds to another wallet immediately. This is not finance advice, of course.
You may get more and better answers contacting the community that code bitcoin.org at https://github.com/bitcoin-dot-org/bitcoin.org. Also if Electrum is outdated and their website is down, as you’ve stated in your op, then contacting them to update the site is of double importance.
Feel free to tell us how you go. I was genuinely interested in Electrum, even though it’s not on F-Droid. I did read once that the Electrum team were close to releasing an Android app, so I’m surprised and a bit disappointed by the events you outlined in your post.
Sorry I could not help you more.