Hi Anton,
I am big, big fan of UNO Electrum wallet for Windows/Mac/Linux. It will sync in minutes.
https://cryptap.us/uno/electrum/ This should probably be our default go-to wallet on Unobtanium.uno.
I tried the Electrum wallet nd it says it is for "watching only"
Do you just want to keep UNO in your wallet, under your control? Electrum UNO is perfect for that.
Electrum UNO is a clever bit of software. It does not download the entire blockchain. It doesn't need to. There are 3 Electrum UNO servers able to support 300 simultaneous connections, which is plenty. Your Electrum UNO wallet uses the blockchain on one of these servers. You can send and receive UNO just like a normal wallet. It's simple, it works, its secure, and its awesome. No messing with big blockchain downloads, add nodes, or conf files.
I trust Electrum UNO with tons Un.
Set it up, and message me an address from your Electrum wallet. I'll send you a UNO so you can test it. Then, if you want you can send that UNO to one of Cryptapus' UNO dice games over at
https://cryptap.us/uno/dice/ I also use Coinomi multicoin wallet on Android. That wallet app is also using Electrum services to let you access UNO and about 50 other cryptos.