Install license in *.config file with sections

As it’s written in docs, I’ve set license in config file like:

<configSections>
    <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup">
        <section name="appSettings" type="System.Configuration.NameValueSectionHandler" />
        ...
    </sectionGroup>
</configSections>
<appSettings>
      <add key="servicestack:license" value="7262-xxx" />
</appSettings>

I get an exception about license limit

2019-05-21 10:35:29,126 [9] ERROR ExitGames.Threading.FailSafeBatchExecutor - ServiceStack.LicenseException: The free-quota limit on '6000 Redis requests per hour' has been reached. Please see https://servicestack.net to upgrade to a commercial license or visit https://github.com/ServiceStackV3/ServiceStackV3 to revert back to the free ServiceStack v3.
   at ServiceStack.LicenseUtils.ApprovedUsage(LicenseFeature licenseFeature, LicenseFeature requestedFeature, Int32 allowedUsage, Int32 actualUsage, String message)
   at ServiceStack.LicenseUtils.AssertValidUsage(LicenseFeature feature, QuotaType quotaType, Int32 count)
   at ServiceStack.Redis.RedisNativeClient.WriteCommandToSendBuffer(Byte[][] cmdWithBinaryArgs)
   at ServiceStack.Redis.RedisNativeClient.SendReceive[T](Byte[][] cmdWithBinaryArgs, Func`1 fn, Action`1 completePipelineFn, Boolean sendWithoutRead)
   at ServiceStack.Redis.RedisNativeClient.SendExpectData(Byte[][] cmdWithBinaryArgs)
   at ServiceStack.Redis.RedisClient.<>c__DisplayClass131_0`1.<Get>b__0(RedisClient r)
   at ServiceStack.Redis.RedisClient.Exec[T](Func`2 action)

Alse I’ve added env var SERVICESTACK_LICENSE with license key value on windows machine, but still its no use
Could you please help with this problem?

UPD:

None, RedisSku - Result of ServiceStack.LicenseUtils.ActivatedLicenseFeatures()

Problem solved. Sorry for post