According to YouGov’s official policy, points you’ve earned don’t expire as long as you keep your account active, and they normally remain in your balance until you redeem them for rewards.
If you feel points disappeared or “expired,” this can happen only if your account was inactive for a very long period (for example, not participating in any surveys for 12+ months), which per YouGov’s terms may lead to forfeiture and even account deactivation — and they are not obligated to warn you beforehand.
To try to recover lost points, contact YouGov support directly through the Help Center with details like your account email, approximate point balance, last activity date, and any screenshots.
If the problem remains unresolved after contacting support, consider filing a complaint on Xolvie to raise awareness and pursue a resolution.