Thank you very much for your invest.
Sadly, this app doesn t work on android 10 and the most important, the main feature of custom oneui theme installer 1.5 hex seems to be missing on the theme maker app.
I think that custom oneui theme installer was abandonned but as i haven t found any info from the dev i hope there will be an update.
Thank you again for your participation.
You can try synergy and substratum lite, there's plenty of themes, thats what im using now.