Hello,
Sorry for the delay in answering.
Mixed Content issues were fixed.
Page speed depends on many factors: theme optimization, number of plugins that you use, server settings, CDN etc https://xstore.helpscoutdocs.com/article/100-how-to-speed-up-my-website We don’t have advanced site optimization experts because individual site optimization is outside the scope of our support. If you need help with the individual site optimization you may contact our partners who specialized on this – WPKraken team
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