The manual trial extension tricks (registry deletion, date changes, reinstallation) do not work on any version of Letasoft Sound Booster released after 2022. The developer has hardened the trial system to defeat exactly those methods.
: The official Letasoft Download Page states that if you require more time for evaluation, you should contact their support team for a formal extension. letasoft sound booster trial extension work
If you're looking for alternative volume booster software, there are several options available, such as: The manual trial extension tricks (registry deletion, date
(starting at $19.95), consider these free, legal alternatives: No free volume boosters? :: Off Topic - Steam Community there are several options available
During the trial, the software functions fully but includes a restriction where it stops amplifying sound for 5 seconds every 5 minutes .