I cannot fix the problem with your posts, simply because I don't know WHAT to fix. I see the gibberish and codes, but I do not know what the original posts looked like, so I cannot restore them. Furthermore, with all of my other forum maintenance and operational responsibilities, I simply do not have the time to do this.
Just in the past month, I have spent more than 45 hours doing the following software upgrades of SEVEN of this forum's TWELVE major software subsystems, to keep things secure and running smoothly:
- XenForo -- updated 2.1.6 to 2.1.7
- php -- updated four separate times 7.3.14-1 to 7.4.3-4
- elasticsearch -- major upgrade 7.5.2 to 7.6.0
- cURL -- first ever upgrade 7.58.0 to 7.68.0
- Java -- first ever & major upgrade Java 8 Update 201 to Java 11.0.6
- phpMyAdmin -- update 5.0.0 rc1 to 5.0.1
- VaultWiki -- updated four separate times 4.1.0 Beta 4 Build 5 to 4.1.0 RC 1 Build 3
That is exactly the issue -- when you use a word processor (as opposed to a straight text editor) to create a document, it inserts all kinds of "hidden" codes when you save the document. Normally this is not a problem, but when you paste this text containing all of the hidden codes into a setup that is not designed to accommodate it, then it reveals all of the hidden codes and formatting. If the forum was set up to display HTML codes in the postings, then it likely would not be an issue. But, allowing HTML is a MAJOR security risk, and this is why that forum software typically uses what is called "bbcode" as the standard, rather than HTML coding. BBcode is [b ] to bold something, as opposed to HTML <b >.
If you use a straight text editor, and save the file as a TXT file, it will not save all kinds of extraneous, BS "hidden" codes like word processors do (note: even if you save a file as a TXT or HTML file in Microsoft Word, it will embed hidden codes that are proprietary to Microsoft software).
Best best is to go through all of your old posts, one by one, and fix them according to how only you know the information was originally presented. Unfortuantely I do not have this knowledge as I didn't make the posts.
Trust me, I've spent many dozens (if not hundreds) of hours already on this forum, in the year since the migration, reformatting, recreating and re-doing all kinds of posts, including each and every Wiki entry, each and every photo album in the "Media" subcategory, and so on and so forth. But at least with those, I knew how they were laid out, so I was able to recreate and edit them to make them readable again.