my license for database toolbox isn’t linked to mobile Matlab

I have bought the license of Database Toolbox and it wotks fine in Mac. When I try to connect with an sqlite .db file in the iPad Pro, I got an error message 'require Database Toolbox require'.

I contacted Mathworks suppirt, but it was Terasoft Tech Support that responded (I don't understand why that happened). They suggested me to link my license with my Mathworks user account, but I already did. Mobile Matlab in my iPad Pro still require the toolbox. What have I been missing?

[Simon]

I just typed in 'license' in the command line in my iPad Pro Matlab. It says 'free'. So why is that? I have clicked 'link license' a couple times and input my license number each time, and each time it responds that license is already linked.

[Simon]

My Matlab Service Maintainence has expired last year. Is it the reason?

[Saurabh]

Hi Simon

You can Contact the MathWorks Technical Supoort through this link: https://www.mathworks.com/support/contact_us.html