Upgrade - Database error

Hi.
I try to upgrade my Suitecrm 7.11.8 to 7.11.15 but I can’t pass the check system. There are few posts with the same problem but no solution.

I have theses errors, in the upgradeWizard.log:
[UpgradeWizard] - Starting database permissions check…
[UpgradeWizard] - Checking CREATE TABLE permissions…
[UpgradeWizard] - cannot CREATE TABLE!
[UpgradeWizard] - Checking INSERT INTO permissions…
[UpgradeWizard] - cannot INSERT INTO!
[UpgradeWizard] - Checking UPDATE TABLE permissions…
[UpgradeWizard] - cannot UPDATE TABLE!
[UpgradeWizard] - Checking SELECT permissions…
[UpgradeWizard] - cannot SELECT!
[UpgradeWizard] - Checking DELETE FROM permissions…
[UpgradeWizard] - cannot DELETE FROM!
[UpgradeWizard] - Checking ALTER TABLE ADD COLUMN permissions…
[UpgradeWizard] - cannot ADD COLUMN!
[UpgradeWizard] - Checking ALTER TABLE CHANGE COLUMN permissions…
[UpgradeWizard] - cannot CHANGE COLUMN!
[UpgradeWizard] - Checking ALTER TABLE DROP COLUMN permissions…
[UpgradeWizard] - cannot DROP COLUMN!
[UpgradeWizard] - Checking DROP TABLE permissions…
[UpgradeWizard] - cannot DROP TABLE!
[UpgradeWizard] - Finished database permissions check.

My database user has all the permissions and the CRM works fine. There is just the upgrade with theses errors.

Have you any idea to sold it?