Due to a security report, the PixTypes plugin was temporarily delisted from the WordPress.org repository. While it’s not a serious concern, we have already addressed the issue and will release an official update as soon as the WordPress.org team will be able to review it. However, the review process can sometimes take a bit longer than expected.
In the meantime, you can access and download the patched version of PixTypes 1.4.16 directly from this URL: https://github.com/pixelgrade/pixtypes/releases/download/1.4.16/pixtypes-1-4-16.zip
After downloading, you can upload it to the WordPress interface, and your site should work as intended.