Need help decoding these ioncube files

Hi, i need help decoding these ioncube files.decoding these files will be a great help to me but i'd be forever thankful to someone that help me learn how it's done.i have old ioncube decoders which work on ioncube 7 and 8 and i tried to understand how it actually works, and i failed.not gonna give up though

@Magd Almuntaser i saw you've helped so many people in the past for free, i'd really appreciate if you could help me with this one.thanks in advance

(decryption of files in vendor folder isn't necessary at all)

files.rtl-theme(dot)com/plugins/rtlCareUnit.zip
virustotal(dot)com/gui/url/5a4ec417abd6c235ae17131b2c3b191a0176acb5dea3d2714fc299235a088c45