Install module button

Hi hans, welcome to the community!

Could you try running the following mySQL statement and confirm if this reveals the install module button?

UPDATE setting SET userSee = 1, userchange = 1, value = 'Unchecked' WHERE setting = 'MODULE_CONFIG_LOCKED_CHECKB';
If you are using a docker based installation please the following guide, which explains how to run a SQL command:

Many Thanks.