Problem with UberMenu 3

First, this is awesome wordpress themes, I like it, thanks for this
Some suggestions you may want to consider

1. Page navi: I Want to replace the old?← Older posts | Newer posts →?links with some page links?, like demo, plugins wp-pagenavi needed?
2. I want standard list for category on desktop and grill list for mobile, so I change line 5 of /parts/post-list-articles.php form <?php if ( hu_is_checked(‘blog-standard’)): ?> to <?php if ( hu_is_checked(‘blog-standard’) && !wp_is_mobile()): ?>. Hope have frontend option ??

Here is my problem?
1. UberMenu plugins not working on mobile, I had spent much times, can you give me any help? My website: https://couponer.vn/
Thank you very much