Some time after installing extension, our extension does not appear in our store so to solve this issue we have to check few things that is given below:
Check list of extension installed in your store you can do that by following command in your terminal.
sudo php bin/magento module:status
You will get list of all extension check your extension is there or not if not then you have to type another command to enable you extension
sudo php bin/magento module:enable YourExtentionName
After doing this you will get to see your extension on your store.