There are three separate holding-time rules at GFF, and they apply to different plans.
The microscalping rule, 2 minutes.
Profit from any trade closed within 2 minutes of opening is not eligible, and is deducted from your account balance and from any payout calculation. The trade itself is not a breach. This applies to EOD, Sprint and Instant Classic accounts, in both the evaluation and funded phases.
The 1 minute rule, Flex only.
Flex accounts are not covered by the microscalping rule. Instead, at each payout request, at least 50% of your closed trades and at least 50% of your net profit in that payout cycle must come from trades held longer than 1 minute. If either is not met, the payout request is declined and all profit from trades held under 1 minute in that cycle is deducted. This is not a breach and your account stays open.
Tick scalping.
Opening and closing positions within seconds to capture small tick profits, typically $10 to $50 a time, is not permitted on any account, including Flex. Profit generated this way may be reviewed and deducted.
These rules exist so that results reflect what would realistically be executable on a live exchange, where slippage, partial fills and liquidity limits apply.
None of these should be confused with the 2 minute news buffer, which is a separate restriction around high impact news events on funded accounts.