IP Adress blocked/ ERR_CONNECTION when vistiting/editing PrestaShop

[Tante Maris]

Hi there!

I started building a PrestaShop to launch my own company. On holiday, for the first time the connection to my shop and admin was not possible anymore due to ERR_CONNECTION. However, the next day this would be resolved. To prevent this from happening I stopped using PrestaShop on a Public Wifi/weak internet connection and the problem seem to not accur for a while anymore. 

Now, at home after a lot of editing this problem also started to occur again. I can only not access my website from all browsers on this internet connection. My hosting party had to get my IP Adress of a BlackList. But the problems seem to appear again.

Is anybody familiar with this problem? Could it be the internet connection and does PrestaShop require a minimum internet speed? Could it be something with my Security certificates for the site(I have a certificate from my hosting party and also said yes to a secrity certificate when installing PrestaShop)? Is there something I can do to prevent this and normally develop my site? I would like to know if anyboday has an idea.

Thanks a lot in advance!
Mariska

www.tantemaris.nl


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UPDATE:  the problem is solved.

I had to enable my caching and also enable smart caching for CSS and JavaSript.

Edited January 19 by Tante Maris
Problem solved (see edit history)