Many thanks for showing your old server
I hope you don’t mind but
I do not work for IW,
I am not connected to IW in any financial or commercial relationship
I understand what your saying, but our production and test servers all use latest versions of php MySQL etc… Well the versions we chose to use ie php 56, MySQL 5.5 ioncube, curl etc… However, I am aware that MySQL is v5.7(community) and php7, but we have reasons for using our choices, and not every latest version is better then old version, but I digress sorry.
IW do have their own repos, and all Linux systems use third party repos, eg centos is red hat, and it does not bother me that we use third party repos, as long as you trust the repo
I am not saying IW do not have issues, but there certainly one of the best support I have seen in many years, they do not promise to resolve issues, but they certainly try, and in 4 years, have always corrected any issues or bugs I have had.
Also, it is impossible to test against all distros, with to many hardware to cater for, so as any commercial company, concentrate on certain distros.
I hope you realise now, that I am not interworx, just a user with paid licenses, posting my experiences, whilst tying to help others where I can, but I do not always get it right, but thankfully there’s a good number of users on here who correct me. It’s how we learn
I think your sounding a little frustrated at the moment, but please be patient and I’m sure IW will resolve for you