I've searched here in Bitcointalk before posting my question. I've found a similar thread but there were no certain time frame for how long I am able to send my sMerits. Please someone inform me. Thanks.
sMerits are there on your account to spend. They wont be remove unless theymos adds a "decay sMerit" system to the forum.
I saw your merit history and there is one merit that has been awarded to you in the last 4months.
Received in the last 120 days
June 13, 2018, 09:43:31 PM: 1 from odolvlobo for Re: Evolution of currencies
If you had spent all your sMerits prior to this then this one merit will contribute to a 0.5 sMerit on your account. That much cannot be sent. It needs to be at least 1 sMerit to be able to send. Thats the minimum amount.
I think this should clear your question and if it does please lock the thread to prevent unnecessary comments after this.