Hi Daan,
PLease, send me your e-mail account to send image about the errors I found.
The last version of OMGF reduce the performance of charge of fonts. The page take more time to charge.
I tried to install the version 4.1.1 and broke the administrative part due to an error message, which I copy below. I had to remove the plugin from version 4.1.1 and install the new version, but it takes a long time to load the fonts.
I use WP-Rocket and DIVI (both in their latest versions).
Here I copy the error messages in the wordpress error.log file
[11-Oct-2020 10:46:13 UTC] PHP Warning: copy(/home2/yosiga/public_html/wp-content/cache/omgf-webfonts/et-builder-googlefonts-cached/rubik-normal-400.ttf): failed to open stream: No such file or directory in /home2/yosiga/public_html/wp-content/plugins/host-webfonts-local/includes/api/class-download.php on line 347
[11-Oct-2020 10:47:04 UTC] PHP Warning: copy(/home2/yosiga/public_html/wp-content/cache/omgf-webfonts/et-builder-googlefonts-cached-67/montserrat-italic-500.woff): failed to open stream: No such file or directory in /home2/yosiga/public_html/wp-content/plugins/host-webfonts-local/includes/api/class-download.php on line 347
[11-Oct-2020 11:44:58 UTC] PHP Warning: copy(/home2/yosiga/public_html/wp-content/cache/omgf-webfonts/et-builder-googlefonts-cached/montserrat-italic-700.woff2): failed to open stream: No such file or directory in /home2/yosiga/public_html/wp-content/plugins/host-webfonts-local/includes/api/class-download.php on line 347
[11-Oct-2020 12:02:43 UTC] PHP Warning: copy(/home2/yosiga/public_html/wp-content/cache/omgf-webfonts/et-builder-googlefonts-cached-406/rubik-italic-300.woff2): failed to open stream: No such file or directory in /home2/yosiga/public_html/wp-content/plugins/host-webfonts-local/includes/api/class-download.php on line 347
Thanks for yor help
Luis