Question about changing a plugin and TOS

Now that I have time to spent at home, I decided to modify a plugin by my own adding things from others plugins, and new parts that I think the plugin needs.

The plugin:
SiteMap Engine by Mostafa.Shiraali (Last Build: Date Uploaded 07-02-2015)

Other plugins used:
ABP Sitemap by Crazycat
Simple XML-sitemap by Wolfgang Ninaus (2011)

My questions are:
Could I make the plugin public or is it against TOS of any kind? Do I have to ask for permission to Mostafa.Shiraali and Crazycat?

It’s my first approach to MyBB’s plugins and it’s easy for me to see the work of others to learn by myself.
I don't answer questions about localhost forums or forums without URL, I'm not a seer.  Cool
basically one should check license of the plugins.

in general, coders say modified versions cannot be redistributed without prior consent.

above referred 2 plugins coders have been active on this forum recently.
so it would be better to contact them with your ideas for their consent.
NoRules asked me in PM, I answered him.
And I answer to anyone asking for my permission: my work is usually under Creative Common:
Quote:CC BY-NC-SA 4.0

Attribution-NonCommercial-ShareAlike 4.0 International

You are free to:
Share — copy and redistribute the material in any medium or format
Adapt — remix, transform, and build upon the material
The licensor cannot revoke these freedoms as long as you follow the license

Under the following terms:
Attribution — You must give appropriate credit, provide a link to the
license, and indicate if changes were made. You may do so in any reasonable
manner, but not in any way that suggests the licensor endorses you or your use.

NonCommercial — You may not use the material for commercial purposes.

ShareAlike — If you remix, transform, or build upon the material, you must
distribute your contributions under the same license as the original.

No additional restrictions — You may not apply legal terms or technological
measures that legally restrict others from doing anything the license permits.

You do not have to comply with the license for elements of the material in the
public domain or where your use is permitted by an applicable exception or
No warranties are given. The license may not give you all of the permissions
necessary for your intended use. For example, other rights such as publicity,
privacy, or moral rights may limit how you use the material.

In extension, if you use just a part of code, feel free to do, under the licence you want. But tell me you use it, so I can notice you if there is update or modification.
Do not ask me help through PM or Discord
(2020-03-24, 12:56 PM)NoRules Wrote: Could I make the plugin public or is it against TOS of any kind?

@Crazycat replied regarding his plugin. SiteMap Engine by Mostafa.Shiraali and Simple XML-sitemap by Wolfgang Ninaus are under the GPL Version 3 license, for which you can find a summary in the following link:

thank you all for your answers, and specially to Mostafa.Shiraali and Crazycat to allow me to use their plugins.
I don't answer questions about localhost forums or forums without URL, I'm not a seer.  Cool

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