now the wallet is finally working stably and POS is dripping regularly

Drippings? You gotta be kidding me :-)
Or you fail to grasp the gravity of the situation here.
I bought this coin at over 20 times it it's currently value. We are talking about a currency that tanked really, really hard. Numus is now worth a tiny fraction of what it once was trading for.
"Drippings" are not going to help me get my investment money back.
That's the sad truth.