Hi BDanielle78,
It sounds like you're having an issue with a pop-up on your iPhone. If so, for help with the issue you can check your current setting with the information below found in the article here: Block pop-up ads and windows in Safari
"Check Safari settings
On your iPhone or iPad, go to Settings > Safari.
- Turn on Block Pop-ups.
- Turn on Fraudulent Website Warning."
Also, as recommended in the article be sure your iOS if fully updated. If needed the article here has information on how to create a backup and update your iOS. Update your iPhone or iPad - Apple Support
You can also view details on how to clear your browser history with the steps here: Clear the history and cookies from Safari on your iPhone, iPad, or iPod touch
If this is a third-party email you're using, you can contact your email provider to ensure you have the correct settings enabled. This article has additional information to assist: iCloud Mail server settings for other email client apps
Keep us posted on if you have any questions about the steps. We'd be happy to continue to assist.
Cheers.