Open Shop malfunction after transfer to new server

[perseas]

Hello
After moving the webpage to a new server, OpenShop does not add products to the cart.
The products are presented normally.

I would like your help

Open Shop Version 2.5
Elxis 4.5 Typhon (1894)
PHP version 7.2.24
PHP version 5.4.31 (old server)

*Note: My products are Immaterial and Downloadable (documents word and pdf)

[datahell]

I must see your site to find out what is the problem. If you wish write a link or send me a personal message with a link.

Note: I strongly advise you to upgrade your Elxis to 5.0. The procedure is very easy and it will take you no more than a few minutes. Click here to begin.

[perseas]

Thank you datahell
I just discovered that images of the products was in .jpeg format while other images products were in .png format working properly so it's a server issue (nginx.conf)
I would really like to upgrade to the current one Version Elxis 5.x but unfortunately I use a lot of third-party components , modules, and Content plugins that are still needed to upgrade to be compatible with Elxis 5.x.

[datahell]

This issue shouldn't have anything to do with product images. Either it is a product mis-configuration or a bug.