Get electrum-LTC, but this time the portable one (to make it keep its data in a different place).
Watch the steps, at one you can select "I already have the seed". You will make yourself "a copy" of the wallet. If the seed is from the right wallet, your money will become visible (and spendable) there.
I do have the seed. Do i need to make a copy of the watching only wallet? i tried already and then tried to open it with electrum, but it couldnt find the copy.
You have to "create a new wallet" and use the seed. If it's the seed for the correct wallet, your money will be shown there and you'll be able to also spend.
You should really forget about "view wallet" for now. As I said, any block explorer shows that. If you go to https://live.blockcypher.com/ltc/address/any_litecoin_wallet_public_address you'll see the amount in the wallet.
So, concentrate on wallet where you can also spend. If you cannot find the way spend, your money is lost (you can consider it's not your wallet).