Hi @vaima01,
We’re sorry to hear about this issue that you faced on your website and it’s really weird because Optimole doesn’t have a mechanism to make images blurry if a limit is exceeded.
Whenever a limit is exceeded, first we will notify you about the exceeding limit and kindly ask you to consider the upgrade.
You can always contact us to investigate if you think the count of the visits was incorrect.
By this time you will have a few days to check if the upgrade is worth it, in case that you will decide to keep using the free version and the limit will be exceeded we will return your original images and this is what should have happened in your case.
Regarding the blurry images, from our experience, blurry images can happen if you have multiple lazy-loading mechanisms on your website so maybe you have installed another caching/optimization plugin that also lazy-loads images, and as Optimole was still working that caused the issue and images started appearing blurry.
In case you want to give Optimole another chance we can definitely investigate the problem and provide you more insights about why could have the conflict happened.
Let us know if you have any questions and if we can help you in any way!