When using GTranslate's paid plans, it's possible to choose Sub-domain URL structure.
In case of using sub-domain URL structure, all the traffic of translated pages will fall on GTranslate servers.
When I chose the sub-domain URL structutre, I found Font Awesome icons were corrupt.
To fix the icon font load issue, you need to add the following rules on top of your .htaccess file:
<FilesMatch "\.(ttf|ttc|otf|eot|svg|woff|woff2)$"> Header set Access-Control-Allow-Origin "*" </FilesMatch>
When I added the rules, the icon font load issue disappeared.
The translation quality of GTranslate may be not so satisfactory. GTranslate offers some options to enhance the quality.