Aspire bvc ce5 tank

Hi everyone! Could you help me find out how to get hold of such a tank? I have plenty of atomizers/coils, but the threading on my 4ml tank is stripped. I had a 1.8ml one, but I don’t know where it is anymore. And I can’t get to Komárno anymore, for months now. This is not the Nautilus, it’s its predecessor, I ordered it from Oxygain back then. Thank you!