The first thing which i did after reading your post, was to open my Coinomi wallet on my Android phone, check if I had any little bit of balance in that wallet, find none and uninstalled it.

In my early bitcoin days, I used to download any wallet I heard was good and sometimes also transfer Bitcoin/altcoin to them. This is not a good approach as it is very difficult to keep track of all the wallet updates if you have many wallets with you. Like in this case, Coinomi stopped upgrading the wallet and you never know they may close the service one day.