Coinomi app wallet is 0retty simple and secure, if you move your btc first.
It You need to recover from seed use bither app. You can also claim bcd and sbtc with it.
If you have problems pm me and I will be glad to help you
Edit: if your old private keys didn't worked in coinomi, your problem is probably related to compressed/uncompressed format, you can convert the format using bitaddress.org.
During the early fork days I helped out a lot of people, I become some kind of expert xd
Are they unencrypted?
If Yes, just click "wallet details" in bitaddress.org (better use it offline, the github source for download is linked on the site itself) and use their tool to convert them
EDIT: Before messing with this, try the other import priv key (not bip38) option!
Not your Electrum wallet password but the Bither password.
If you have nothing in Bither, uninstall, reinstall and remember your password this time. It works.
No it isn't something else. You have to enter the Bither wallet password to import the private keys.
Are trying to scan the QRcode for your electrum wallet seed? Don't do that.
You have to view your addresses in Electrum, right click on them and view each one's private key separately. Open the QRcode for it and scan it with the Bither wallet using the advanced options and
then Import Private Key and then select From Private Key Text and scan it in.
Probably uncompressed but make sure the address you select matches the Bitcoin address you scanned the private key's QRcode for and you'll be fine.
If the private key begins with K or L then use compressed. If it begins with 5, use uncompressed.
Edit. I just realized you said compressed corresponds to the public key - that's the one to use.
Sorry, I'm playing with Kraken as well and I think they just enabled trading again.
One final question, I only need to import the keys that have >0 tx right?
If you don’t have a lot of addresses you could import each address that has had a transaction history greater than 0.
However if you know which address had BTC in it at the time of each fork then that should be the address which will give you the forked coins.
Good luck.