Here is my experience with a brand new bluehost shared pro plan.
I installed ubb 7.7.2.
A net new install.
I used the default permissions
Since I already knew they don't support 777
All went well til I edited a option in the control panel and clicked on submit.
I think it was cookies.
It bumped me off and displayed a error.
I could not log back in.
An appropriate representation of the requested resource could not be found on this server. This error was generated by Mod_Security.
So I used the cpanel no errors were present.
I called bluehost. about mod_ security.
After listening to a 5 minute ordeal about how important it was they finally offered to disable it.
I said do it.
Then they stated it can take up to 24 hours for a push.
Then I asked about specific errors.
This was what they said . In general terms.
You have four error log entries.
1.. html access
They could not provide any specifics because I was not going to wait for second level support.
So now I am waiting for 24 hours for the push.
I did run the test script and found a few deficiencies prior.
But no failures.
For file size and variables but I do have access to fix them. in the php editor.
They pre install wordpress and it is a royal pain to get rid of.
Besides it is a hosted version though free for 1 year..
You need to enable it for your site before you can goto to settings and delete it.
Unless you want to manually delete the database then the files and edit the .htaccess file.
Which I tried and it barked back.
Then you are charged by wordpress.com after 1 year and 1 month or it expires according to the ..htaccess file.
The hell is I did not request a wordpress site that they offer.