1544C

In terms to investment in Litecoin, I came across a site, https://ltcminer.com/1395140 I have made several free withdrawals from 0.0003 (seven times) and 0.00025 (eight times) per day using the free version totaling up to 15 withdrawals (0.0041) without investment. Now, I can't withdraw as the sight is asking me to upgrade plan in order withdraw. Should I invest and upgrade or just wait and see???