htaccess issue

Your account has been abusing CPU resources for an extended period of time. As a result all of your sites have been cached in order to ensure continued performance stability of the server. While we do limit each account to no more than 25% of a system’s CPU in our terms of service, we do not actively take actions against accounts until they greatly exceed that number, which is what happened in this case.

Aye, I checked those sites and found that they both had PHP suspensions. What’s more, both of them had also suffered Magento brutes, like gsnsagro. I went ahead and applied the same mitigation to those two sites, as well as to every other one of your resolds that had a public_html/downloader/.htaccess , and lifted both of those suspensions. There are no other suspensions on any of your accounts at this time. There are 16 total attack blocks in place:

home/apdhaka/public_html/downloader/.htaccess /
home/rajshahi/public_html/downloader/.htaccess /

All of these containing an efficient block of requests that lack an HTTP User Agent:

ErrorDocument 416 “Requested Range Not Satisfiable”
RewriteCond %{HTTP_USER_AGENT} ^$
RewriteRule .* – [R=416,L]

WordPress: SQL Error when importing database

Question: I’m developing a site locally on XAMPP with SQL 5.6.21. When I attempt to import the database to a server using an older version of SQL I get the following error: “#1273 – Unknown collation: ‘utf8mb4_unicode_ci’”

Answer: That’s not exactly a WordPress problems, and it would be easier to upgrade MySQL on the server, to be honest.
You need MySQL 5.5.3 or higher to support the utf8mb4_unicode_ci collation.
Have you contacted your hosting provider?
Alternatively, you can try changing your collation to utf8_general_ci but that might cause character encoding problems with the existing data.