All apps are downloaded via AIO Downloader to provide better speed and ensure your safety. For example： How to install vidmate apk with AIO Downloader
Please keep chrome open, click ok, the system will automatically help you complete the download.
After the download is complete, you can open the top notification bar to view the download file.
If you are using a third-party downloader to download the apk file, go to that third-party app to check the downloaded file, and click to install.
The apk file you downloaded is AIO Downloader. Then install AIO Downloader.
The apk file you needed will be downloaded and installed automatically by AIO Downloader.