You'll want to check your CloudFlare CDN configuration.
CloudFlare has a feature called “Email Address Obfuscation“, which replaces email addresses when they think the client is bot: 
What is Email Address Obfuscation? · Cloudflare Support docs
When you turn off this feature, the issue will be resolved.
The free DocSearch plan, doesn't include technical web support from the Support team. For further assistance, you can post your question on the Algolia Community Forum or Discord. For front-end issues, you can raise the issue directly on GitHub. In addition, you can review our DocSearch Documentation and FAQ.