Why my iPad 10.3.4 version is not supported to download apps from the AppStore? And what is the resolution for it?

The response is: Your iPad model (most likely an iPad 4th generation) cannot support IOS versions beyond 10.3.4 because of hardware (CPU/RAM) incompatibility.

Many apps on AppStore (I would say the vast majority) require iOS versions more recent than the one currently running on your device.

The only solution is to have a newer (new or second- hand) iPad model, compatible with lthe latest iPadOS version, sorry.

Regards

Giulio

Given that your iPad model was firstly released in 2012, and that Apple generally continues to support (with new versions of its operating system) its products for about 5-6 years (as well as third-party app manufacturers), unfortunately there are no other solutions, other than to buy a latest model.

I am perfectly aware that this is not a welcome solution, but there are no alternatives.

Regards

Giulio

If your iPad is currently running, or cannot be updated beyond iOS 10.3.3/4, then have an iPad4.

Update support for iPad4 ended September 2017. The final iOS releases for this model were iOS 10.3.3 (WiFi Only models) and iOS 10.3.4 (WiFi & Cellular). iPad4 cannot be updated to any later major version of iOS as it lacks the minimum hardware requirements needed to run more recent versions. The 32-bit platform upon which the iPad4 is based is obsolete.

Many App Developers have dropped support for 32-bit devices and iOS versions preceding iOS11/12/13 - and have withdrawn older versions of their Apps from the Apple App Store. Withdrawal of Apps supporting older models of iPad is making the utility and usefulness of older model iPads significantly more limited. Once compatible versions Apps are withdrawn, you’ll not be able (re)download or (re)install them.

If Apps that you need to use now have higher minimum iOS-version requirements than your iPad can support, your only option is to replace your iPad with newer model. Of current models, even the entry-level iPad9 supports current iPadOS 15 - and has hardware specifications and capabilities that vastly outperform your old iPad4.

I hope this information is helpful - if only in clearly stating the fundamental limitations of your iPad4 and your available options.