The share is entirely free, and the client’s money will always remain unaffected. 
So you can keep the share(s) for a more extended period (and yes, you have to login at least once on every 3 months), or you can sell it and reinvest the monetary value/withdraw it (in 30 days after the allocation).
If you’re interested in keeping precisely that type of share, then you can sell the free one, withdraw the funds, deposit again using your own money and buy the same stock - that way the “3 months login” rule will be bypassed. 