Service temporarily unavailable

I’ve been getting this message lately very often, when I try to update a quote/invoice etc… This message comes up and I have to keep pressing update aprox 10-15 times until the program decides to go through with the update. Also, when I insert tax using the tax column in a quote/invoice etc, the pull down menu comes up blank and says ‘not found’ or just continues to ‘search’. I then have to continuously press the drop down menu until it appears. Is this something that has been happening to anyone lately? Is it a version bug?

I am receiving this, this morning. I had to press the pull down menu multiple times to get the HST to show up

I am using the cloud version.