I did not find any clues that if an account is inactive for 7 days then the fund will get freeze.
Based on what I read on the FAQ page, fund will be sent to the nominated withdrawal address automatically once an account is inactive for 7 days.
IMO 7 days is just too short period of time, it is like forcing players to be active. Never heard any other sites with similar rule as this one. It is reasonable if the account is inactive for too long time, but 7 days?
How about players who like to gamble once a month or once every two weeks?
Frankly speaking, this rule does not make senses for me.