Server too busy?

I have found the word " server too busy "many times a day. My customer could not  use it as well. Could you please do somethings make it better than before.and thank you very much to make a respond very quick. I like it. 

I checked all your forms and they are all working properly. I was able to load all of them. We don't have any server issues reported. Please try to clear your browser cache. For troubleshooting purposes, please check if they work on another browser. I will clear your form cache so that your forms will be refreshed from our servers.