Please for God sake update your Outdated select2.js v3.5.2 to Select2 v4+ as i have buy many pro plugins and most of them do not work because of this problem in your theme. Its 5 year old update. I have even write about it to plugin author and they are saying why don’t your theme author understand and update it as most of the plugin won’t work due to this.
There is no way plugins author are going to downgrade to select2 just to make it compatible with your theme, and its not just about your theme.
check this article - https://github.com/woocommerce/woocommerce/wiki/Select2-fields-not-working-in-3.0.x , its from WooCommerce (owned by WordPress) even they do not recommend using that version of select2 but still your theme is using an outdated version.
I am not sure why are you not willing to understand that things to upgrade and not downgrade, Please follow proper WordPress guidelines for theme and keep things updated so that we don’t face any technical or security issue.
Send this to your technical team and dev. I am always being a loyal customer for Traveler and Shine theme so please understand. I am not requesting here for any custom code but to update what is not even recommended by woocommerce and wordpress.
Thank you for your attention and recommendation to our product, please have look at these information:
We have been confirmed to you before in ticket that our Dev have been noted this information about update select2.js v3.5.2 to Select2 v4+. They will check on this and make the decision.
Sorry that we cannot guarantee if the update have been plan only. If there any news with this update we will surely contact and let you know.
Thank you very much for your kind, please keep your eyes on us and wait for our update Theme version.
It is really a super theme. I recommend you to use it. Thao is also my favorite. Despite my support period, he returned to me and helped. I love Thao. Very sweet. They have developed a unique program. I have not seen such a theme on this site yet. This must be the best theme in the field of tourism. Thanks Thao and his team. Greetings from Turkey...
Thank you for your good recommend and congrats for our Traveler Theme. We wish you all the best of luck with your business, and please do not hesitate to contact us if any further you need into our support system.
Our promise to always keep focus and hard-working on update product and provide great service for great customer's experiences.