Website Fonts in Lockdown Mode

I am building a website in Elements with the North Eleven template. I have been using the Jost font and the embedded fonts. The website needs to be viewed on Apple devices which are running Apple’s Lockdown Mode which restricts the ability for the browsers such as Safari to reach and use web fonts and I believe I am not 100% sure but I think it also restricts non-system fonts from loading. Is there anyway to make the site if it doesn’t access or use the Jost font embedded, to switch to a system font specifically Helvetica or Arial. Right now I am getting a times new roman style font and it looks ghastly. Thank you.

PS I have tried embedding the fonts into the project but it makes no difference either.

For some reason it is displaying Jost as Times New Roman in lockdown mode. Is there anyway to force it to use a specific system font such as Arial or Helvetica?